Abstract
IN studying the influence of water extracts from fertilized Arbacia lixula eggs upon unfertilized eggs, J. Runnström found that the jelly coat was attacked by the extract (unpublished). In order to examine this activity, extracts were prepared from fertilized and unfertilized eggs and also from sperm. The material was collected at the Zoological Station, Naples, in the spring of 1948, and the investigations started there and continued in Stockholm.
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LUNDBLAD, G. Proteolytic Activity in Eggs and Sperms from Sea-Urchins. Nature 163, 643 (1949). https://doi.org/10.1038/163643a0
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DOI: https://doi.org/10.1038/163643a0
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