Callebaut M, Van Nueten E, Harrisson F, Van Nassauw L, Bortier H
University of Antwerp, Laboratory of Human Anatomy and Embryology, RUCA Antwerp, Belgium.
Eur J Morphol. 2000 Feb;38(1):3-16. doi: 10.1076/0924-3860(200002)38:01;1-#;ft003.
In the present study, we demonstrate that quail junctional endoblast fragments have powerful embryo-inducing potencies when placed on the deep side of the upper layer (UL) of the anti-sickle region of unincubated chicken blastoderms. Moreover, in most cases the inducing potencies of the autochthonous Rauber's sickle-endophyll complex were inhibited at distance. Also, junctional endoblast still in situ in an early streak embryo strongly inhibits the inducing capacities of a Rauber's sickle - endophyll complex apposed on the deep side of the upper layer of the cranial part of the area pellucida. So junctional endoblast, besides embryo inducing potencies also seems to dominate and to inhibit at distance the gastrulation potencies of an ectopically placed or autochthonous Rauber's sickle - endophyll complex.
在本研究中，我们证明，将鹌鹑连接内胚层片段置于未孵化鸡胚盘抗镰刀区上层（UL）的深层时，具有强大的胚胎诱导能力。此外，在大多数情况下，原位劳伯氏镰刀 - 内胚层复合体的诱导能力在一定距离处受到抑制。而且，处于早期原条胚胎原位的连接内胚层强烈抑制与透明区头部上层深层相对的劳伯氏镰刀 - 内胚层复合体的诱导能力。因此，连接内胚层除了具有胚胎诱导能力外，似乎还能在一定距离处主导并抑制异位放置或原位的劳伯氏镰刀 - 内胚层复合体的原肠胚形成能力。
