spermatogonium


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Related to spermatogonium: oogonium, spermatogonia

spermatogonium

 [sper″mah-to-go´ne-um] (Gr.)
an undifferentiated male germ cell, originating in a seminal tubule and dividing into two spermatocytes.

sper·ma·to·go·ni·um

(sper'mă-tō-gō'nē-ŭm),
The primordial male cell derived by mitotic division from the yolk sac that migrates into the developing testes. Subsequent to puberty, it differentiates by increasing several times in size to become a primary spermatocyte.
See also: spermatid.
[spermato- + G. gonē, generation]

spermatogonium

(spər-măt′ə-gō′nē-əm, spûr′mə-tə-)
n. pl. spermatogo·nia (-nē-ə)
Any of the cells that give rise through mitosis to the spermatocytes and are found in the testes of vertebrates.

sper·mat′o·go′ni·al (-nē-əl) adj.

sper·ma·to·go·ni·um

, spermatogone (spĕr'mă-tō-gō'nē-ŭm, -mă-tō-gōn)
The undifferentiated male sex cell derived by mitotic division from a primordial germ cell; increasing several times in size, it becomes a primary spermatocyte.
See also: spermatid
Synonym(s): spermatoblast.
[spermato- + G. gonē, generation]

spermatogonium

an early diploid stage of male GAMETO GENESIS.
References in periodicals archive ?
This explains that the CDC25A protein in spermatogonium and Sertoli cells are actively acting cells undergoing mitotic division and CDC25A is a cell cycle regulator of either mitosis or meiosis.
The large nuclei of spermatocytes in the pachytene stage were located in the middle of the seminiferous epithelium, while the nuclei of Sertoli cells, type A spermatogonia, and intermediate spermatogonium were closer to the basal lamina of the seminiferous tubule.
Electron microscopic observations indicated that the hepatopancreatic cells, spermatogonium, gill tissues and muscle cells of the crabs with HPND showed severe structural and morphological changes, but microorganisms including bacteria, fungi, microsporidian and viruses were not detected; the healthy crabs were fed/injected with diseased tissues, the symptoms of HPND were not found, suggesting that the diseased crabs with HPND sampled from the farms were not infected by pathogenic organisms.
Spermatogonium, primary spermatocyte, and spermatid cells that demonstrated TUNEL positive staining in preparations, showed the presence of apoptotic cells (Figure 2b).
Experimentally induced diabetic rats show disturbed spermatogenesis, dilated seminiferous tubules, and decreased numbers of spermatogonium, primary spermatocytes, spermatids, and mature spermatozoa [54].
The process begins with the spermatogonium, which resides next to the basal lamina of the seminiferous tubules.
The process begins when a type A1 spermatogonium divides to generate two type A2 spermatogonia.