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Term:
Parent Terms Term With Siblings Child Terms
abnormal acrosome reaction +   
anomaly in the discharge, by sperm, of a single, anterior secretory granule following the sperm's attachment to the zona pellucida of the oocyte; the process begins with the fusion of the outer acrosomal membrane with the sperm plasma membrane and ends with the exocytosis of the acrosomal contents into the zona pellucida
abnormal egg activation +   
abnormal sperm migration in female genital tract +   
abnormal sperm motility +   
abnormal sperm-egg fusion +   
delayed fertilization  
impaired fertilization +   

Synonyms
Definition Sources: GO:0007340

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