| 单词 | cell nucleus |
| 例句 | The DNA of mitochondria is qualitatively different from the DNA of animal cell nuclei and strikingly similar to bacterial DNA; moreover, like microbial DNA, it is closely associated with membranes. The Lives of a Cell 1974-01-01T00:00:00Z During reproduction, the helices separate, assisted by a special unwinding protein, each synthesizing an identical copy of the other from nucleotide building blocks floating about nearby in the viscous liquid of the cell nucleus. Cosmos 1980-01-01T00:00:00Z Specifically, she wanted to find out what causes one X chromosome to be switched off and one to stay on, even though they share the same cell nucleus. Edith Heard: 'We can't undo what our parents have given us in terms of our genes' 2013-06-22T23:05:02Z Today’s researchers were able to obtain cell nuclei from the tissues collected in the 1970s. De-extinction won’t make us better conservationists! 2013-09-06T12:40:00Z We are talking about a book Charles wants to write about the cell nucleus, so naturally, this leads to all sorts of hilarity. This is a story about all the ways to fall in love and . . . grilled cheese. 2019-01-20T05:00:00Z The researchers analysed more than three million individual cell nuclei using the technique of RNA sequencing, which reveals each cell's genetic identity. Cell atlases of the human brain 2023-10-12T04:00:00Z The ETH researchers have become the first to show that the cell nucleus weeds out such DNA rings and deposits them, together with the plasmids coming from outside the cell, in the cell plasma. A hygiene program for chromosomes 2023-10-02T04:00:00Z To fit into the tiny cell nucleus, it is condensed around proteins called histones. Strengthening artificial immune cells to fight cancer 2023-09-20T04:00:00Z The researchers gathered DNA from the cell nucleus and mitochondria within bone samples. In a Stone Age Community, Women Moved While Men Stayed with Family 2023-08-10T04:00:00Z The soma is usually about 10–25 micrometers in diameter and often is not much larger than the cell nucleus it contains. Fundamentals of Biology 2015-01-01T00:00:00Z Because prokaryotic organisms lack a cell nucleus, the processes of transcription and translation occur almost simultaneously. Concepts of Biology 2013-04-25T00:00:00Z Paleontologists are particularly fond of the fossil-building mineral calcium phosphate because it can preserve soft organs in exquisite detail—sometimes all the way down to cell nuclei. Scientists Ruin Delicious Seabass to Probe Why Some Organs Don’t Fossilize 2022-11-24T05:00:00Z There he decided to focus first on mitochondrial DNA, copies of which are present in a significantly higher number inside the cell nucleus compared to DNA. Nobel Winner Svante Pääbo Discovered the Neandertal in Our Genes 2022-10-04T04:00:00Z The TEM has allowed us to see individual atoms and structure of cell nuclei. College Physics for AP Courses 2015-08-12T00:00:00Z This can be seen as several Barr bodies in each cell nucleus. Biology for AP Courses 2022-06-09T00:00:00Z In crickets and most other insects, initially just the cell nucleus divides, forming many nuclei that travel throughout the shared cytoplasm and only later form cellular membranes of their own. The Mysterious Dance of the Cricket Embryos 2022-08-05T04:00:00Z M phase: Cell Division Mitosis is the division of the cell nucleus, and the division of the cytoplasm is called cytokinesis. Miller & Levine Biology 2018-01-01T00:00:00Z In contrast to the DNA from the cell nucleus, the mitochondrial genome is small. Nobel Winner Svante Pääbo Discovered the Neandertal in Our Genes 2022-10-04T04:00:00Z In either case, this binding generates a hormone-receptor complex that moves toward the chromatin in the cell nucleus and binds to a particular segment of the cell’s DNA. Anatomy and Physiology 2013-06-19T00:00:00Z Research the total number of chromosomes in the cells of each of these fruits and think about how this might correspond to the amount of DNA in these fruits’ cell nuclei. Biology for AP Courses 2022-06-09T00:00:00Z There are a number of specific cloning techniques, but typically a cell nucleus from the animal you wish to clone is injected into a donor egg that has had its genetic material removed. Pet cloning is getting more popular despite the cost 2022-04-03T04:00:00Z Mitosis is the segment of the cell cycle during which the division of the cell nucleus occurs. Miller & Levine Biology 2018-01-01T00:00:00Z In November, researchers in Germany and the United States used AlphaFold2 and cryo-EM to map the structure of the nuclear pore complex, an assembly of 30 different proteins that controls access to the cell nucleus. Science’s 2021 Breakthrough of the Year: AI brings protein structures to all 2021-12-15T05:00:00Z Figure 3.29 From DNA to Protein: Transcription through Translation Transcription within the cell nucleus produces an mRNA molecule, which is modified and then sent into the cytoplasm for translation. Anatomy and Physiology 2013-06-19T00:00:00Z Prokaryotic organisms are single-celled organisms that lack a cell nucleus, and their DNA therefore floats freely in the cell cytoplasm. Biology for AP Courses 2022-06-09T00:00:00Z But your DNA is stored in the cell nucleus, and this whole process happens outside it. 5 COVID-19 vaccine myths, debunked 2021-06-03T04:00:00Z Because messenger RNA does not enter the cell nucleus, it does not affect DNA. Four steps to building vaccine trust in marginalized communities 2021-02-09T05:00:00Z When introduced into the body, the altered adenovirus injects the gene into cell nuclei to produce the spike protein. The U.S. may soon have a third vaccine. Here's how it works 2021-01-29T05:00:00Z Mitosis is the division of genetic material, during which the cell nucleus breaks down and two new, fully functional, nuclei are formed. Anatomy and Physiology 2013-06-19T00:00:00Z “Whether it happens in infected cells and … leads to significant integration in the cell nucleus is another question.” The coronavirus may sometimes slip its genetic material into human chromosomes—but what does that mean? 2020-12-16T05:00:00Z Normally, DNA in the cell nucleus is copied into mRNA, which then goes into the cell cytoplasm and serves as the template for protein production. Gene therapy could offer an inclusive cure for cystic fibrosis 2020-07-28T04:00:00Z DNA in cell nuclei is wrapped around histone proteins to form units called nucleosomes. Chromatin modified in a molecular reaction chamber 2020-03-10T04:00:00Z Two cartilage cells were supposedly found linked together and material that resembles a cell nucleus was also spotted. Traces of DNA found in fossilized dinosaur skull, scientists claim 2020-03-03T05:00:00Z Squamous cell nuclei tend to be flat, horizontal, and elliptical, mirroring the form of the cell. Anatomy and Physiology 2013-06-19T00:00:00Z Most DNA is located in the cell nucleus, where it is called nuclear DNA. State Justice Department announces new technology to identify unknown persons 2020-02-25T05:00:00Z Healthy huntingtin gathers up molecules deep in the cell nucleus that are required for cell division, Pouladi explained; the mutant protein fumbles that task, hobbling the proliferation of progenitor cells. Research Using Brains-in-a-Dish Forces a Radical Rethinking of Huntington’s Disease 2019-12-10T05:00:00Z Reliance solely on mitochondrial evidence leads to misinterpretation, he says, and risks overlooking important evolutionary information in the separate DNA of the cell nucleus. Lush Okavango Delta Pinpointed as Ancestral Homeland of All Living Humans 2019-10-28T04:00:00Z The authors noted that the lone frog derived from the most-differentiated cell nucleus was “accidentally killed shortly before metamorphosis”. Cell identity reprogrammed 2019-10-13T04:00:00Z Following platelet release, megakaryocyte remnants, which are little more than a cell nucleus, are consumed by macrophages. Anatomy and Physiology 2013-06-19T00:00:00Z A deep reductionism located human nature inside the cell nucleus. How science has shifted our sense of identity 2019-10-07T04:00:00Z They compared sections of DNA from cell nuclei in bitter and sweet almond trees, focusing on five specific proteins called transcription factors. The Bitter Truth: Scientists Sequence the Almond Genome 2019-06-13T04:00:00Z Algae found in thermal springs and other extreme environments have heated up a long-standing debate: Do eukaryotes—organisms with a cell nucleus—sometimes get an evolutionary boost in the form of genes transferred from bacteria? Plants and animals sometimes take genes from bacteria, study of algae suggests 2019-01-29T05:00:00Z What was known about its function was tantalizing: It serves as a courier, helping shuttle other proteins across the membrane that divides the cell nucleus from the cytoplasm. To halt brain diseases, drugs take aim at protein traffic jams that kill neurons 2019-01-16T05:00:00Z A hydrophobic hormone diffuses through the cell membrane and binds to the intracellular hormone receptor, which may be in the cytosol or in the cell nucleus. Anatomy and Physiology 2013-06-19T00:00:00Z More membraneless structures continued to be found, such as the nucleolus, a dense structure in the cell nucleus. "Lava-Lamp" Proteins May Help Cells Cheat Death 2018-11-28T05:00:00Z It is asking for US$4.7 billion to sequence all 1.35 million known eukaryotic species — those with a cell nucleus enclosed by a membrane — over the next 10 years. Life on Earth to have its DNA analysed in the name of conservation 2018-11-05T05:00:00Z They were single-celled creatures, simple in structure, with no cell nucleus. The Scientist Who Scrambled Darwin’s Tree of Life 2018-08-13T04:00:00Z Usually, when we talk about DNA, we’re talking about DNA from the cell nucleus. How Chasing Bigfoot Can Lead to Actual Science 2018-05-03T04:00:00Z The researchers pried DNA from the cell nuclei, genetic material inherited from both father and mother birds. Ravens mated another species into oblivion, their twisted family tree shows 2018-03-02T05:00:00Z It starts with the cell nucleus, the microscopic warehouse that stores an animal's genome. Researchers clone the first primates from monkey tissue cells 2018-01-24T05:00:00Z DNA in the cell nucleus normally consists of a twisted double strand of molecules called nucleotides. Experimental Huntington's Therapy Shows Promise in a Small Trial 2018-01-16T05:00:00Z Both activate receptors in the cell nucleus that regulate gene expression. Drug development: Sprint finish He showed that when the protein encoded by timeless bound to the protein made by the gene period, they were able to enter the cell nucleus. Nobel in physiology, medicine awarded to three Americans for discovery of ‘clock genes’ 2017-10-02T04:00:00Z When TIM partners with PER, he found, the two proteins together are able to enter a cell nucleus and block period gene activity, closing the inhibitory feedback loop. Medicine Nobel Prize Goes to Circadian Rhythm Researchers 2017-10-02T04:00:00Z One way is how Dolly the sheep was cloned, by taking the part of the egg cell that contains genetic information and replacing it with a donor’s cell nucleus. Orphan Black is ending, but how far has human cloning come? 2017-08-11T04:00:00Z However, both types of transposable elements contain the code for an enzyme called reverse transcriptase, which theoretically enables them to reinsert genetic code into the genome in the cell nucleus. Medicine's Movable Feast: What Jumping Genes Can Teach Us about Treating Disease 2017-07-26T04:00:00Z The DNA in the energy-producing mitochondria in our cells is different from that in our cell nuclei, and is passed down only in the female line. Early humans and Neanderthals interbred much earlier than once thought 2017-07-07T04:00:00Z The 600-million-year-old organisms are preserved with such detail that the fossils, when freed from the rock in a chemical bath and scanned with X-rays, reveal not only individual cells but possible cell nuclei. Time is running out to determine if China holds the world’s oldest animal fossils 2017-05-05T04:00:00Z Given these uncertainties, the scientists decided to increase the odds of success by searching for abundant mitochondrial DNA, which is situated outside the cell nucleus and is inherited solely from the mother. How Did Aborigines Get to Australia? DNA Helps Solve a Mystery 2017-03-08T05:00:00Z DNA in the cell nucleus carries something on the order of 20,000 human genes, while mitochondrial DNA codes for just 37 genes. Human embryo experiment shows progress toward ‘three-parent’ babies 2016-11-30T05:00:00Z He therefore decided to spread the burden by inserting six of the genes into the cell nucleus instead. Growing anti-malaria drugs in tobacco plants 2016-10-20T04:00:00Z When Janke analyzed the samples’ nuclear genes—located in the cell nucleus—“one marker after another told us the same story,” he says. Africa May Have New Giraffe Species—And This Could Help Protect Them Expectations were low: it seemed almost impossible that an adult cell nucleus could be reprogrammed to give rise to a live animal. Dolly at 20: The inside story on the world’s most famous sheep 2016-06-28T04:00:00Z In Aedes’s case, each cell nucleus contains 1.3 billion letters of DNA from each parent, coiled into three chromosomes. Mapping a Genetic Strategy to Fight the Zika Virus 2016-03-30T04:00:00Z The mitochondria are organs within a human cell that live outside the cell nucleus. Human embryo experiment shows progress toward ‘three-parent’ babies 2016-11-30T05:00:00Z Cryo–electron tomography reveals the molecular organization of the cell nucleus periphery in situ. Visualizing the molecular sociology at the HeLa cell nuclear periphery | Science 2016-02-25T05:00:00Z All these jobs, though, use single-stranded versions of RNA, unlike the double-stranded DNA in a cell nucleus. The slopes of enlightenment 2015-10-15T04:00:00Z Other experts say even more robust family trees will come from studying DNA in the cell nucleus, in part because it contains far more genes than chloroplasts do. Orchids’ dazzling diversity explained 2015-08-25T04:00:00Z Mammals are unusual among vertebrates in having red blood cells that lack a cell nucleus. 75-million-year-old dinosaur blood and collagen discovered in fossil fragments 2015-06-09T04:00:00Z Before arriving at the cones and rods, light must traverse the full thickness of the retina, with its layers of neurons and cell nuclei. The Purpose of Our Eyes' Strange Wiring Is Unveiled 2015-03-18T04:00:00Z Cryo–electron tomography reveals the molecular organization of the cell nucleus periphery in situ. Visualizing the molecular sociology at the HeLa cell nuclear periphery | Science 2016-02-25T05:00:00Z Key worries include remnants of mutant mitochondrial DNA that persist despite the treatment, and the disruption of complex interactions between mitochondrial genes and those in the cell nucleus. Three-Parent IVF: What's The Hurry? 2015-02-28T05:00:00Z By reconstructing the mammoth genome through a mosaic of samples, scientists might be able to engineer a cell nucleus and then use the somatic cloning method that led to Dolly the sheep. Can scientists bring mammoths back to life? 2015-02-06T05:00:00Z Mitochondrial DNA is separate from DNA found in the cell nucleus and does not affect human characteristics such as hair or eye color, appearance or personality traits. Britain Votes to Allow World's First "3-Parent" IVF Babies 2015-02-03T05:00:00Z Besides the strands of DNA within a cell nucleus, genetic material also is found within cell structures known as mitochondria. WWII Marine finally identified, buried in Michigan 2014-11-03T05:00:00Z Once the somatic cell nucleus is in place, a lab worker uses electricity to fuse the nucleus and oocyte together into a reconstructed embryo that’s implanted into a surrogate mother. For $100,000, You Can Clone Your Dog 2014-10-22T04:00:00Z Back in Uppsala, I studied the samples from the Bode mummies under a microscope, always searching for the remains of a cell nucleus. Searching for Answers in Very Old DNA 2014-06-23T04:00:00Z Unlike the genome in the cell nucleus, which includes chromosomes from both parents, all of a person's mitochondria derive from the thousands contained in the mother's egg. Reproductive medicine: The power of three 2014-05-20T04:00:00Z The recovery of DNA from the cell nucleus, which is far rarer than mitochondrial DNA, would no doubt clarify matters. The Top 10 Science Stories of 2013 2013-12-19T22:45:07.449Z In developing mouse somatosensory cortex, endogenous Btbd3 translocated to the cell nucleus in response to neuronal activity and oriented primary dendrites toward active axons in the barrel hollow. [Report] BTBD3 Controls Dendrite Orientation Toward Active Axons in Mammalian Neocortex 2013-12-04T22:56:58.093Z He explained that the drugs boost the number of cell nuclei in the muscle fibres. Doping benefits can last a decade 2013-10-30T00:29:56Z After a few weeks, I detected a cell nucleus that appeared to contain preserved DNA. Searching for Answers in Very Old DNA 2014-06-23T04:00:00Z Activated Protein 3 moves through the nuclear membrane into the cell nucleus where it physically binds to the DNA and activates genes that control cell growth, specialization and survival. Hallmarks of Cancer 1: Self-Sufficiency in Growth Signals 2013-09-18T13:15:00.663Z It is surprising that the question of how transcription occurs in the eukaryotic cell nucleus is still a matter of controversy, given that it is such a basic cellular process. [Perspective] Flashing a Light on the Spatial Organization of Transcription 2013-08-09T19:26:18.443Z As expected, they wrote, somatic cell nuclei introduced into cytoplasts under these conditions developed into normal blastocysts. Viable Human Embryonic Stem Cells Created By Cloning 2013-05-17T12:47:40Z If this junk had a role, it was just to space out the remaining 1%, the genes in which instructions about how to make proteins are encoded, in a useful way in the cell nucleus. RNA-only genes: The origin of species? 2012-11-29T17:39:56Z Dr. Gurdon’s technique was to extract the cell nucleus, containing the frog’s DNA, from a mature intestinal cell and inject the nucleus into a frog egg whose own nucleus had been removed. Gurdon and Yamanaka Win Nobel Prize for Stem Cell Research 2012-10-11T22:00:59Z Before describing the nuclear-transplant experiments that distinguish between these two possibilities, we must outline the methods used to transplant living cell nuclei into eggs. Transplanted Nuclei and Cell Differentiation, by Sir John B. Gurdon 2012-10-09T23:45:00.177Z Dr. Gurdon’s technique was to extract the cell nucleus, containing the frog’s chromosomes, from a mature intestinal cell and inject the nucleus into a frog egg whose own nucleus had been removed. Cloning and Stem Cell Discoveries Earn Nobel Prize in Medicine 2012-10-08T13:55:13Z In a classic experiment, he replaced the immature cell nucleus in an egg cell of a frog with the nucleus from a mature intestinal cell. The 2012 Nobel Prize in Physiology or Medicine 2012-10-08T11:45:05.853Z Everything discussed in the EP work and in this and many other articles takes place within the cell nucleus, yet the outcomes can make and unmake us. Junk DNA, Junky PR 2012-09-17T23:45:02.920Z For quantitative analyses, cell nuclei were counted in five randomly chosen fields of cell culture. Experimental adaptation of an influenza H5 HA confers respiratory droplet transmission to a reassortant H5 HA/H1N1 virus in ferrets 2012-06-20T17:22:43.540Z Each kind of material is well suited for certain problems; nuclear transplantation utilizing amphibian eggs and cell nuclei is especially suited to the analysis of processes that lead to the first major differences between cells. Transplanted Nuclei and Cell Differentiation, by Sir John B. Gurdon 2012-10-09T23:45:00.177Z This identified about 3,000 new interactions, with many involving membrane and other proteins that cannot reach the cell nucleus. Proteomics: The interaction map 2012-04-11T17:21:02.077Z In 1962, he tested this hypothesis by replacing the cell nucleus of a frog's egg cell with a nucleus from a mature, specialised cell derived from the intestine of a tadpole. The 2012 Nobel Prize in Physiology or Medicine 2012-10-08T11:45:05.853Z We found that the brain tissue contained significantly more L1 elements in each cell nucleus than the heart or liver tissues did. Jumping Genes in the Brain Ensure That Even Identical Twins Are Different 2012-02-14T16:15:04.437Z Massage also stimulated mitochondria, the tiny powerhouses inside cell nuclei that convert glucose into the energy essential for cell function and repair. Well: How Massage Heals Sore Muscles 2012-02-06T05:01:23Z RNA molecules are single-stranded copies of the double-helical DNA genes in the cell nucleus. The nature of humanity: What?s a man? 2012-02-02T16:03:12Z Microscopically, there is seen to be much fragmentation of the fibers with a marked increase of the brown pigment granules which surround the cell nuclei. Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. 2011-10-11T02:01:07.890Z But his experiment involved the removal of cell nuclei with pipettes followed by their introduction into other cells. The 2012 Nobel Prize in Physiology or Medicine 2012-10-08T11:45:05.853Z Quantum effects in cancer might fall in the former category; the latter might include the physics of chromatin, the mass of DNA and protein in the cell nucleus. Physics meets cancer: The disruptor 2011-06-01T17:20:30.187Z In the February 2011 issue of Scientific American Tom Misteli, a senior investigator at the National Cancer Institute, reveals an amazingly dynamic world inside the cell nucleus. Drama in the Cell Nucleus [Video] 2011-01-31T16:45:02.477Z To get the entire picture of genetic history, researchers needed to examine DNA from the cell nucleus, where the vast majority of genes are stored. Genes Separate Africa?s Elephant Herds 2010-12-22T16:20:00Z The researchers discovered, however, that Rous sarcoma virus takes a detour through the cell nucleus before going to the cell membrane. Retrovirus Replication Process Different Than Thought 2010-07-20T14:32:00Z There are many differences between eukaryotes and bacteria; but one of the most obvious is that bacteria do not sequester their DNA in a cell nucleus. Life in the Third Realm 2010-05-19T01:00:00Z The new, more extensive examination, which looks at DNA in the cell nucleus, shows this conclusion is wrong. The Neanderthal genome: A cave man blinking in the light 2010-05-06T14:07:00Z Mitochondrial DNA is located outside the cell nucleus and inherited from the mother. Ancient DNA Suggests New Hominid Line 2010-03-25T13:29:00Z The albuminoid of the cell nucleus also contains phosphorus, and the h�moglobin of the blood contains iron. The Mechanism of Life It is then found in bones, in fat and nerve tissue, in all cells and particularly in the cell nuclei. History of Phosphorus Phosphorus in meat occurs as phosphoprotein in the nucleoproteins of cell nuclei, and lecithoproteins in the brain and to a less extent in other tissues as phosphorized fats. Dietetics for Nurses They first appear as point-like granules in the protoplasm, bearing no relation to the cell nucleus; they gradually increase, and acquire a considerable circumference. Histology of the Blood Normal and Pathological At this stage cell nuclei are red, protoplasm is yellow, and bacteria are colourless. The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged. Chromatin: the minute granules that make up the chromoplasm of a cell nucleus. Explanation of Terms Used in Entomology It is not protoplasm, but cell substance, plus cell nucleus, which forms the simplest basis of life. The Story of the Living Machine A Review of the Conclusions of Modern Biology in Regard to the Mechanism Which Controls the Phenomena of Living Activity Thus sex is inherited, like other characters, by the action of the chromatin material of the cell nucleus. Taboo and Genetics A Study of the Biological, Sociological and Psychological Foundation of the Family When they have attained about the size of the cell nucleus, they, or rather their contents, appear to break through the protoplasmic membrane and to leave the cell. Histology of the Blood Normal and Pathological Chromosome: one of the segments into which the chromoplasmic filaments of a cell nucleus breaks up just before indirect division. Explanation of Terms Used in Entomology |
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