Homocystinuria
发表于 2025-3-23 09:41:46
Sperm Motilitysed in detail in Chap. X. Sperm motility forms one of the most important parameters in assessing the fertility potential of a semen specimen, as immotile human sperm cannot penetrate cervical mucus (Amelar et al. 1980). The type of movement also influences fertilizing capacity as the vigorous beatin
认为
发表于 2025-3-23 16:46:10
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dagger
发表于 2025-3-23 20:15:04
https://doi.org/10.1007/978-3-642-71638-6biochemistry; biology; biophysics; cell; cells; chemistry; immunology; mammals; microscopy; molecular biology
察觉
发表于 2025-3-24 01:37:36
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FLORA
发表于 2025-3-24 03:01:36
https://doi.org/10.1007/978-3-540-34489-6e of Sertoli cells. It is characterized by complex morphological and biochemical transformations that lead to the formation of a highly specialized cell, the haploid spermatozoon. The spermatozoa are genetically diverse owing to the meiotic events of gene recombination and chromosome reassortment. T
拱形面包
发表于 2025-3-24 09:47:21
https://doi.org/10.1007/978-3-540-34489-6uring 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
格子架
发表于 2025-3-24 13:34:54
https://doi.org/10.1007/978-3-540-34489-6the basal lamina (Figs. 5 and 12). After a series of mitoses, the spermatogonia give rise to the spermatocytes. The spermatogonial cell divisions are usually incomplete. The daughter cells remain interconnected by cytoplasmic bridges. It generally is accepted that mouse spermatogonia undergo six suc
大酒杯
发表于 2025-3-24 17:48:10
,Medikamente zur Behandlung von Eßstörungen,rmiogenesis which ends when the spermatozoa are released from the seminiferous epithelium. After the haploid round spermatids are formed, their nuclear and cytoplasmic components undergo a complex series of morphological, histochemical and biochemical changes ending with the production of highly dif
Dorsal
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易达到
发表于 2025-3-25 02:33:12
,Psychopharmaka und Fahrtüchtigkeit,e function of carrying genetic material from the male to the oocyte, consists of two principal parts, such as the head and the tail (Fig. 55). The tail consists of four components, such as the neck, mid-piece, principal piece, and end-piece (Phillips 1975a). The cytoplasmic droplet is present in ass