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  • block to polyspermy
  • We are interested in the biochemical mechanisms involved in the early events of mammalian egg activation, with special reference to the mechanism(s) by which the block to polyspermy at the level of the zona pellucida (ZP) is established. (springer.com)
  • compaction
  • When the cells number around sixteen the solid sphere of cells within the zona pellucida is referred to as a morula At this stage the cells start to bind firmly together in a process called compaction, and cleavage continues as cellular differentiation. (wikipedia.org)
  • structural
  • Further consistent with this structural hypothesis is the knowledge that suramin - a polysulfated drug (with substantial corresponding negative charge) has been found to inhibit sperm-zona pellucida binding. (wikipedia.org)
  • species
  • When the zona pellucida of one animal species is injected into the bloodstream of another, it results in sterility of the second species due to immune response. (wikipedia.org)
  • known
  • Despite more than 40 years of research into zona pellucida (ZP)-based vaccines, relatively little is known about their mechanism of action. (up.ac.za)
  • eggs
  • Suggested techniques include zona pellucida imaging, which can detect differences in birefringence between eggs, which is a predictor of compaction, blastulation and pregnancy. (wikipedia.org)