title: The egg cortex in early development of sea urchins and starfish.
abstract: The cytoplasm can no longer be looked upon as so much passive material which the nucleus elaborates during development, but it has a complex organization and a development which may be synchronous with certain changes in the nucleus and the division mechanism, and yet is independent of these.
authors.affiliation: Friday Harbor Laboratory, University of Washington, Washington 98250.
authors.forename: T E
authors.initials: TE
authors.lastname: Schroeder
mesh_terms: D000818:Animals; D008954:Models, Biological; D009866:Oogenesis; D010063:Ovum / Q000502:physiology / Q000648:ultrastructure*; D012617:Sea Urchins / Q000502:physiology*; D013215:Starfish / Q000502:physiology*