Henson, John H Characterization of Anastral, Bipolar Spindle Development and Atypical Cytokinesis in Ammonia-Activated Sea Urchin Eggs. [electronic resource] - The Biological bulletin Oct 2004 - 160 p. digital Publication Type: Journal Article ISSN: 1939-8697 Standard No.: 10.1086/BBLv207n2p160a doi