area pellucida meaning

  "area pellucida" in a sentence
n : the pellucid central area that immediately surrounds a vertebrate embryo (as of a bird) formed by discoidal cleavage


  1. In avian gastrulation, "'Koller's sickle "'is a local thickening of cells at the posterior edge of the upper layer of the area pellucida called the epiblast.

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