yolk plug

yolk plug
The large edible endothermal cells surrounded by the blastopore of an amphibian gastrula during its later stages

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  • yolk plug — n a mass of yolk cells found in the blastopore of the embryos of some vertebrates * * * the mass of yolk cells protruding from the blastopore of amphibians at the end of gastrulation …   Medical dictionary

  • Yolk plug — is the remaining patch of endodermal cells that is created during the formation of the ventral lip of the blastopore. It is a patch of large endodermal cells which remains exposed on the vegetal surface of the amphibian blastula that will… …   Wikipedia

  • yolk plug — yolk within the blastopore …   Dictionary of ichthyology

  • yolk plug — noun : a pluglike mass of yolk cells found in the blastopore of the embryos of some vertebrates …   Useful english dictionary

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  • reptile — reptilelike, adj. reptiloid /rep tl oyd /, adj. /rep til, tuyl/, n. 1. any cold blooded vertebrate of the class Reptilia, comprising the turtles, snakes, lizards, crocodilians, amphisbaenians, tuatara, and various extinct members including the… …   Universalium

  • pregnancy — /preg neuhn see/, n., pl. pregnancies. the state, condition, or quality of being pregnant. [1520 30; PREGN(ANT) + ANCY] * * * Process of human gestation that takes place in the female s body as a fetus develops, from fertilization to birth (see… …   Universalium

  • protein — proteinaceous /proh tee nay sheuhs, tee i nay /, proteinic, proteinous, adj. /proh teen, tee in/, n. 1. Biochem. any of numerous, highly varied organic molecules constituting a large portion of the mass of every life form and necessary in the… …   Universalium

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