Kiyomitsu Ishikawa

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Cervical mucus is egg white-like mucus that increases in the female cervical canal and external os of the uterus at ovulatory phase. Spermatozoa climb up through this mucus to the uterine tube, where they meet an oocyte causing fertilization. If this cervical mucus has quality or quantity problems, spermatozoa are unable to ascend. Then, so-called(More)
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