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The mature spermatozoa of CC. (A) and (B), the mature spermatozoa of 2nCC. (C) and (D), the mature spermatozoa of 3nCC. Bar in part A and C, 2 μm; in part B and D, 1 μm. As the figure shows, the mature spermatozoa of 2nCC and 3nCC had the normal external form, comprising a head, a connecting piece, and a tail.
