INDUCTION OF ASTER FORMATION AND CLEAVAGE IN EGGS OF THE SEA URCHIN HEMICENTROTUS PULCHERRIMUS BY INJECTION OF SPERM

Ken-Ichi Hirano1, Masaru Ishikawa2

  • 1Sugashima Marine Biological Laboratory, Nagoya University, Sugashima, Toba, Mie-ken 517 and.

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