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Biol Bull 117: 63-67. (August 1959)
© 1959 Marine Biological Laboratory
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THE PRESENCE OF FERTILIZIN HAPTENS WITHIN THE UNFERTILIZED SEA URCHIN EGG

JOHN W. BROOKBANK 1

1 Department of Biology, University of Florida, Gainesville, Florida, and The Friday Harbor Laboratories, University of Washington, Friday Harbor, Washington

1. ATPase-bearing granules of unfertilized sea urchin eggs were shown, through absorptions of antisera against fertilizin, to possess fertilizin-like combining groups.

2. These granules were also capable of neutralizing the cleavage-blocking action of these antisera.

3. These results are discussed in light of the similarity of action of antisera against purified fertilizin to the action of antisera against extracts of jelly-free (acid treated) unfertilized eggs, and washed, demembranated fertilized eggs.






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Copyright © 1959 by the Marine Biological Laboratory.