Genes / Proteins | Definitions | Models | Developmental Models | General Concepts | Contribute/Corrections | Links | Protocols | Home   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z zona reaction   Definition: Search for:     Glossary - word Glossary - def Textbooks Protocols Images Tools Forum PubMed Links Press Releases   Biology Glossary search by EverythingBio.com           in mammals, modification of the zona pellucida that blocks polyspermy; enzymes released by cortical granules digest sperm receptor proteins ZP2 and ZP3 so that they can no longer bind sperm.         A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z    Genes / Proteins  |  Definitions  |  Models  |  Developmental Models  |  General Concepts  |  Contribute/Corrections  |  Links  |  Protocols  |  Home Website created and maintained by: Mark Lefers and the Holmgren Lab last updated: July 26, 2004