Abstract:The search for lipid changes at fertilization shows production of PAF, a phospholipid known as Platelet Activating Factor. Effects on gametes by externally applied PAF suggest it may be involved in several less understood calcium dependent events of fertilization. PAF artificially activates both echinoderm eggs and sperm. Calcium channel drugs 2APB, ruthenium red, nitrendipine and nifedipine and pH 5 SW do not prevent it, but external calcium must be present. 2APB does prevent normal jelly activation of sperm.… Show more
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