Assertion: sea urchin's egg | /r/CreatedBy | shift
Facets:
value: toward the site of sperm entry
type: TRANSITIVE-OBJECT
value: in the pigmented egg cortex
type: LOCATION
Source sentences:
text: gray crescent - Region of intermediate pigmentation in the marginal zone of the amphibian egg caused by a shift in the pigmented egg cortex toward the site of sperm entry; marks the future site of the dorsal lip of the blastopore.