Pattern regulation in the chick autopodium at advanced stages of embryonic development
作者:
Yolanda Gańan,
Domingo Macias,
Juan M. Hurle,
期刊:
Developmental Dynamics
(WILEY Available online 1994)
卷期:
Volume 199,
issue 1
页码: 64-72
ISSN:1058-8388
年代: 1994
DOI:10.1002/aja.1001990107
出版商: Wiley Subscription Services, Inc., A Wiley Company
关键词: Limb morphogenesis;Regulation;Chondrogenesis;Cell death
数据来源: WILEY
摘要:
AbstractIn previous studies we have observed that the interdigital tissue of the chick embryo leg bud during the stages previous to interdigital cell death exhibits a considerable chondrogenic potentiality both in vivo and in vitro. In the present investigation we have carried out a variety of experimental manipulations of the chick leg bud at stage 29 to discover possible mechanisms accounting for interdigital ectopic chondrogenesis and extradigit formation. Our results show that the interdigital tissue is capable of forming an extradigit when temporarily isolated microsurgically and regrafted in its original loction and after deletion of one of the adjacent digital primordia, suggesting that developing phalangeal cartilages exercise an inhibitory effect on chondrification in adjoining tissues. Furthermore, and of greater importance, ablation of the primordium of a digit is followed by normal development of the definitive digit if the wound surfaces are suitably apposed. These results reveal a considerable regulatory potentital in the autopodium at advanced stages of development. © 1994 Wiley‐Liss, I
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