spermatogonium

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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

/sper·ma·to·go·ni·um/ (-go´ne-um) pl. spermatogo´nia   an undifferentiated male germ cell, originating in a seminiferous tubule and dividing into two primary spermatocytes.

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.

spermatogonium

[-gō′nē·əm] pl. spermatogonia
Etymology: Gk, sperma + gone, generation
a male germ cell that gives rise to a spermatocyte early in spermatogenesis.

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.

spermatogonium

pl. spermatogonia [Gr.] an undifferentiated male germ cell, originating in a seminal tubule and dividing into a new generation of spermatogonia or into two spermatocytes.
References in periodicals archive ?
Presence of spermatogonia was determined by reverse transcriptase polymerase chain reaction and immunofluorescence for spermatogonial markers.
Spermatogonial proliferation patterns in men with azoospermia of different etiologies.
After further differentiation, these in vitro derived germline stem cells expressed markers which are specific to primordial germ cells, spermatogonial stem cells, meiotic (spermatocytes) and post meiotic germ cells (spermatids and sperm).
We developed a strategy for the establishment of spermatogonial stem cell lines from embryonic stem cells," Nayernia said on his website, but added that further research would be needed to see if they could develop.
This is not surprising since the PI is an index of evaluation of the pachytene checkpoint activity, spermatogonial activity and/or spermiogenesis being beside altered.
Spermatogonial Cell-mediated Activation of An Ikappa Bzeta-independent NF-kappaB Pathway in Sertoli Cells Induces Transcription of the Lipocalin-2 Gene.
In a letter published in Nature, researchers claimed that some spermatogonial stem cells derived from adult mouse testis seem to behave like pluripotent mouse embryonic stem cells.
If we know more about how spermatogonial stem cells turn into sperm cells, this knowledge could be translated into treatments for men whose sperm is dysfunctional, although this is several years down the line.
A team in the Netherlands has successfully harvested spermatogonial stem cells from cows and cultured them inside mouse testes.
Reduction of testosterone in treated animals resulted in progressive loss of round spermatids while spermatogonial cells appear to be less affected.