Midpiece of the Spermatozoa (IMAGE)
Caption
The midpiece of the spermatozoa becomes flexible during epididymal transit. When sperm calcineurin (PPP3CC/PPP3R2) is blocked by CyclosporineA (CsA)or FK506, the midpiece remains rigid throughout epididymal transit.
Credit
[Credit: Masahito Ikawa]
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