Biomaterial Database

Identification of the spermatogenic stages in living seminiferous tubules of man. 1978

V Nikkanen, and K O Söderström, and M Parvinen

Parts of human seminiferous tubules containing late spermatids with condensed nuclei (Stage II) absorbed more transmitted light than did parts at other stages. Spermatogenic stages I, III, IV and VI were identifiable by phase-contrast microscopy.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008858	Microscopy, Phase-Contrast	A form of interference microscopy in which variations of the refracting index in the object are converted into variations of intensity in the image. This is achieved by the action of a phase plate.	Phase-Contrast Microscopy,Microscopies, Phase-Contrast,Microscopy, Phase Contrast,Phase Contrast Microscopy,Phase-Contrast Microscopies
D002449	Cell Aggregation	The phenomenon by which dissociated cells intermixed in vitro tend to group themselves with cells of their own type.	Aggregation, Cell,Aggregations, Cell,Cell Aggregations
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012670	Seminiferous Epithelium	The epithelium lining the seminiferous tubules composed of primary male germ cells (SPERMATOGONIA) and supporting SERTOLI CELLS. As SPERMATOGENESIS proceeds, the developing germ cells migrate toward the lumen. The adluminal compartment, the inner two thirds of the tubules, contains SPERMATOCYTES and the more advanced germ cells.	Epithelium, Seminiferous,Epitheliums, Seminiferous,Seminiferous Epitheliums
D013091	Spermatogenesis	The process of germ cell development in the male from the primordial germ cells, through SPERMATOGONIA; SPERMATOCYTES; SPERMATIDS; to the mature haploid SPERMATOZOA.	Spermatocytogenesis,Spermiogenesis
D013737	Testis	The male gonad containing two functional parts: the SEMINIFEROUS TUBULES for the production and transport of male germ cells (SPERMATOGENESIS) and the interstitial compartment containing LEYDIG CELLS that produce ANDROGENS.	Testicles,Testes,Testicle
D014172	Transillumination	Passage of light through body tissues or cavities for examination of internal structures.	Diaphanography,Diaphanoscopy,Diaphanographies,Diaphanoscopies,Transilluminations