| 单词 | blastema |
| 例句 | Cells then migrate to the wound site and form a blob called a blastema. Salamander's Genome Guards Secrets of Limb Regrowth 2018-07-07T04:00:00Z Most regeneration research focuses on the stub—or blastema—that forms over the wound of a severed limb. Biology's Beloved Amphibian--the Axolotl--Is Racing Toward Extinction 2017-11-20T05:00:00Z Most regeneration research focuses on the stub — or blastema — that forms over the wound of a severed limb. Biology’s beloved amphibian — the axolotl — is racing towards extinction Soon, the dedifferentiated cells start dividing to populate the bud of a new limb or other body part, known as a blastema. Animal models: Unlock your inner salamander : Nature : Nature Research 2016-12-06T05:00:00Z In the intercalation model, the first blastema cells acquire fingertip identity, creating a gap in positional identity that triggers regeneration of the intervening region from the stump. [Report] Progressive Specification Rather than Intercalation of Segments During Limb Regeneration 2013-12-12T19:26:57.651Z Whatever their origin, the blastema cells redifferentiate into new bone, muscle and other tissues. Salamander's Genome Guards Secrets of Limb Regrowth 2018-07-07T04:00:00Z My colleagues and I were saying, ‘This looks like a mammalian blastema!’ African Spiny Mice Regenerate Missing Body Parts la Salamanders 2012-10-05T17:15:10.557Z Dr Seifert told the BBC: "It is thought that one of the main constraints on regenerating appendages in humans, or mammals for that fact, is the failure to form a blastema." 'Scar free healing' clue in mice 2012-09-26T17:05:30Z The process of generation by development of blastema, or fission of cells, in which the new formation is in all respect like the individual from which it proceeds. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z Connected with, or proceeding from, the blastema; blastemal. Webster's Unabridged Dictionary (2nd 100 Pages) 2012-03-24T02:00:19.387Z But no new limb will grow unless nerves reach the blastema during an early critical period: If a limb’s nerve is severed, an amputation will simply heal over. Salamander's Genome Guards Secrets of Limb Regrowth 2018-07-07T04:00:00Z This blastema then begins to change, and gradually assumes the form of the perfect Echinoderm.32 56 Fig. On the Origin and Metamorphoses of Insects 2011-12-05T03:00:46.667Z Tests showed the mice produced a "regeneration hub" known as a blastema in order to repair the injury. 'Scar free healing' clue in mice 2012-09-26T17:05:30Z But unlike in the TGF-β1 experiment, the blastema did form properly. Regeneration: The axolotl story 2011-04-13T12:45:00.460Z Such a centre of growth is frequently called a blastema, and consists of a mass of closely packed nuclei which have arisen by the growth-activity of the nuclei in the neighbourhood. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z The first stage corresponds to the process of organization, the gelatine representing the blastema, and the drop the nucleus. The Mechanism of Life Another school maintains that cells and tissues of all kinds may be formed, independently of pre-existing cells, from plastic lymph or blastema; and this it is thought is well exhibited in the repair of wounds. The Variation of Animals and Plants Under Domestication, Volume II (of 2) Until, however, the cellular nature of the body had been demonstrated, it seemed necessary in some instances to postulate a blastema or exudation to account for certain new formations. The World's Greatest Books — Volume 15 — Science But if the levels were blocked using an inhibitor, blastema formation and limb regeneration did not occur. Regeneration: The axolotl story 2011-04-13T12:45:00.460Z Life consisting in the constant differentiation of the tissues by the action of oxygen, and their integration from the blastema furnished by the blood, why is not the harmony of these processes preserved forever? The Destiny of the Soul A Critical History of the Doctrine of a Future Life They are also greatly affected by the addition of minute quantities of chemical substances either to the gelatinous blastema or to the drops which represent the primary nuclei. The Mechanism of Life Others maintain that cells and tissues of all kinds may be formed, independently of pre-existing cells, from plastic lymph or blastema. The Variation of Animals and Plants under Domestication — Volume 2 New Formations I at present entirely reject the blastema doctrine in its original form, and in its place I put the doctrine of the continuous development of tissues out of one another. The World's Greatest Books — Volume 15 — Science It seems at present necessary to abandon the original idea of Schwann, that we can observe the building up of a cell from the simple granules of a blastema, or formative fluid. Medical Essays, 1842-1882 My first doubts of the blastema doctrine date from my researches on tubercle. The World's Greatest Books — Volume 15 — Science |
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