Electron microscopy of cleaving sea urchin eggs.
D000818:Animals; D002455:Cell Division; D004447:Echinodermata; D004583:Electrons; D032061:Galium; D008853:Microscopy; D008854:Microscopy, Electron; D012617:Sea Urchins
CELL DIVISION; ECHINODERMS; MICROSCOPY, ELECTRON