| 单词 | morula |
| 例句 | At this stage of development, called the morula, there are 30-60 cells. Biology for AP Courses 2022-06-09T00:00:00Z Further analysis of those iPS cells showed that, compared to in vitro iPS cells, their gene expression more closely resembled that observed in embryos at an early stage of development called the morula. Stem Cells Created in Living Mice 2013-09-12T14:15:59.753Z That stage in the development of the ovum in which the outer cells of the morula become more defined and form the blastoderm. Webster's Unabridged Dictionary (2nd 100 Pages) 2012-03-24T02:00:19.387Z This mass is termed by embryologists “the morula.” Embryology The Beginnings of Life 2011-09-12T02:00:28.483Z For example, in his interview with a South African villager who explained how to make the alcoholic drink, morula, she repeatedly says that it is best if she demonstrates the process. Link by Link: When Knowledge Isn?t Written, Does It Still Count? 2011-08-08T00:30:10Z Later, the protoplasm becomes segregated around each of the nuclei, giving the parasite a mulberry-like aspect; hence this stage is frequently known as a morula. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z As a consequence of this superficial concentration we get segmentation of the vitellus, with the production of a morula. The Mechanism of Life This morula, as I have called it, reproduces the next stage in the development of life. The World's Greatest Books — Volume 15 — Science Next, within this morula some of the cells become condensed into one particular portion, leaving a space which contains fluid. Embryology The Beginnings of Life 2011-09-12T02:00:28.483Z A solid mass of cells is formed at the beginning, called a morula, Figure 1. Text Book of Biology, Part 1: Vertebrata It is clear that this morula reproduces for us to-day the simple structure of the multicellular animal that succeeded the unicellular amoeboid form in the early Laurentian period. The Evolution of Man — Volume 2 The final result of this repeated cleavage is the formation of a globular cluster of similar segmentation-cells, which we call the mulberry-formation or morula. The Evolution of Man — Volume 1 By continued total cleavage the morula, or mulberry-shaped cluster of cells, is formed. The Evolution of Man — Volume 2 In this way we get the spherical, mulberry-shaped body, which we call the morula. The Evolution of Man — Volume 2 To have some idea of those ancestors of our race that succeeded phylogenetically to the Moraeada, we have only to follow the further embryonic development of the morula. The Evolution of Man — Volume 2 In accordance with the biogenetic law, the morula recalls the ancestral form of the Moraea, or simple colony of Protozoa. The Evolution of Man — Volume 2 In the growth of this hooded gastrula we cannot sharply mark off the various stages which we distinguish successively in the bell-gastrula as morula and gastrula. The Evolution of Man — Volume 1 As this quantity of food-yelk fills the centre of the ovum before cleavage begins, there is no difference in this respect between the morula and the blastula. The Evolution of Man — Volume 1 By repeated cleavage of it a morula is formed, and from this a blastula, which changes in a very characteristic way into the greatly modified gastrula. The Evolution of Man — Volume 1 |
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