锡箔纸
发表于 2025-3-28 15:50:42
Hugo Sellheim Geh. Med.-Raturing the postnatal period, the testes mature to perform two functions, one hormonal (e.g. production of testosterone and other sex steroids, which are also well known to be secreted by the foetal testis) and the other production of spermatozoa (spermatogenesis) in the adult. These processes are loc
Pedagogy
发表于 2025-3-28 18:52:52
Hugo Sellheim Geh. Med.-Ratammals including marsupials (Guraya 1965, 1971a, Phillips 1975a, Harding et al. 1979, Sarafis et al. 1981, Holstein and Roosen-Runge 1981, Heath et al. 1983, Gledhill 1986). The spermatozoa of various primate species show, more or less, the same basic configuration of the head, except for some minor
条街道往前推
发表于 2025-3-29 01:56:38
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