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Biol Bull 80: 202-207. (April 1941)
© 1941 Marine Biological Laboratory
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SPERM ACTIVATION BY ARBACIA EGG EXTRACTS, WITH SPECIAL REFERENCE TO ECHINOCHROME

IVOR CORNMAN 1

1 The Marine Biological Laboratory, Woods Hole, Mass.

Echinochrome is not the agent in A. punctulata egg-water which stimulates sperm. The echinochrome-protein complex precipitated from the extract of crushed eggs by (NH4)2SO4 is an effective sperm stimulator. From egg-water dialysate and from the echinochrome-protein complex a distillate can be obtained which has sperm-activating properties. It is tentatively suggested that a higher alcohol freed by a hydrolytic agent in the egg-water is the stimulating substance acting directly upon the sperm.






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Copyright © 1941 by the Marine Biological Laboratory.