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Science. 1984 Jul 20;225(4659):342-4.

Monoclonal antibody to a human germ cell membrane glycoprotein that inhibits fertilization.

Abstract

A monoclonal antibody to an antigen in the human germ cell membrane did not agglutinate or immobilize sperm but inhibited binding and penetration of zona-free hamster ova by human sperm and blocked murine fertilization in vitro. The antibody, of the 2a subclass of immunoglobulin G, was germ cell-specific but not species-specific. It recognized a single antigen of 23 kilodaltons that has been isolated from human germ cells. This fertilization antigen, located on the postacrosome , midpiece, and tail of human sperm, is a glycoprotein of testicular origin associated with some types of human involuntary immunoinfertility .

PMID:
6539947
[PubMed - indexed for MEDLINE]
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