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Comparison of the acrosome reaction-inducing ability of the outer and inner surfaces of the zona pellucida and oolemma: a study using the golden hamster
Published online by Cambridge University Press: 26 September 2008
Summary
The outer surface of hamster zona pellucida has a strong ability to induce the sperm acrosome reaction, whereas neither the inner surface of the zona nor the oolemma has this ability. Therefore, the spermatozoa that fertilise oocytes after subzonal insemination of spermatozoa (SUZI) must have been either acrosome-reacted prior to injection or acrosome-reacted spontaneously while swimming within the perivitelline space. The outer surface of fresh mouse zona is not capable of inducing the acrosome reaction of hamster spermatozoa. When fixed with glutaraldehyde, however, it became capable of inducing the hamster sperm acrosome reaction rather efficiently. The reason for this is not clear.
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