Comparison of oocyte activation and Ca2+ oscillation-inducing abilities of round/elongated spermatids of mouse, hamster, rat, rabbit and human assessed by mouse oocyte activation assay

Abstract excerpt

Oocyte activation and Ca2+ oscillation-inducing abilities of round spermatid (ROS) and elongated spermatid (ELS) of some rodents and human were assessed by their injection into mouse (B6D2F1) oocytes (mouse test). With mice (B6D2F1, ICR) and rat, ROS displayed no oocyte activation or Ca2+ oscillation-inducing abilities. Although ELS could induce activation at 87, 86 and 31% of injected oocytes respectively, most...

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