View source for Yolk plug

'''Yolk plug''' is the remaining patch of [[endodermal]] cells that is created during the formation of the [[dorsal lip]] of the [[blastopore]] in the [[amphibian]]. It is a patch of large endodermal cells which remains exposed on the vegetal surface of the blastula that will eventually be internalized by [[epiboly]].
==References==
*{{cite book|author=Frank J. Dye|title=Dictionary of Developmental Biology and Embryology|url=https://books.google.com/books?id=Z4ZHxrcFGkkC&pg=PA228|date=21 February 2012|publisher=John Wiley & Sons|isbn=978-0-470-90595-1|pages=228}}
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[[Category:Amphibians]]
[[Category:Vertebrate developmental biology]]
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