• acrosomal
  • Capacitated sperm samples were exposed to a solution containing 2 zona pellucidae (ZP) per μl for 60 min, after which acrosomal status were recorded using a PSA-FITC technique. (sun.ac.za)
  • mammals
  • In non-mammals, the zona pellucida is called the vitelline membrane or envelope, and the vitelline envelope in insects, and plays an important role in preventing cross-breeding of different species, especially in species such as fish that fertilize outside of the body. (wikipedia.org)
  • The zona pellucida is a thick membrane that surrounds the unfertilised eggs of mammals. (wikipedia.org)
  • It is called zona pellucida in mammals. (wikipedia.org)
  • 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)
  • GnRH
  • Among others, immunization methods with GnRH and/or purified zona pellucida may be an alternative in order to reach the immunosterilization. (vin.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)