concept

Sperm swimming towards an egg

Figures of homunculi in semen.

Adult goat testis

Canine testes

Spermatozoa. Observed by Loeuwenhoek.

Seminiferous tubule

Angiotensin I-converting enzyme

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Sperm

Images

Catalogue

Seminiferous tubule

Sperm swimming towards an egg

Spermatozoa. Observed by Loeuwenhoek.

Adult goat testis

Angiotensin I-converting enzyme