MICROFILAMENTS IN THE POLAR LOBE CONSTRICTION OF FERTILIZED EGGS OF <i>ILYANASSA OBSOLETA </i>

Abstract

GARY W. CONRAD, DANIEL C . WILLIAMS, F. RUDOLF TURNER, KENNETH M. NEWROCK and RUDOLF A. RAFF. From the Division of Biology, Kansas State University, Manhattan, Kansas 66506, Mount Desert Island Biological Laboratory, Salisbury Cove, Maine 04672, and Department of Zoology, Indiana University, Bloomington, Indiana 47401 . Drs. Conrad and Williams are from Kansas State University and Mount Desert Island Biological Laboratory . Drs . Turner, Newrock, and Raff are from Indiana University.