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Abstract. The 100,000 th scientific article on the subject of spermatozoa was recently published. Numerous studies evaluated the characteristics of this important cell that led to tremendous。

Sperm Morphology and Ultrastructure. A mature spermatozoon is a highly differentiated single cell that comprises head, midpiece and tail regions (Fig. 2A) all bounded。

The revolutionary discovery of the presence of spermatozoa in semen was made by Antonie van Leeuwenhoek (1632–1723), who in 1676 sent a letter (published in 1678) to the。

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