What's the difference between spermatoblast and spermatogonium?
Spermatoblast
Definition:
(n.) Same as Spermoblast.
Example Sentences:
Spermatogonium
Definition:
(n.) A primitive seminal cell, occuring in masses in the seminal tubules. It divides into a mass (spermosphere) of small cells (spermoblast), which in turn give rise to spermatozoids.
Example Sentences:
(1) An Ap1 spermatogonium produces two Ap2 spermatogonia during Stage II of the cycle, Ap2 spermatogonia produce four type B spermatogonia during Stage VI of the cycle, and type B spermatogonia produce eight primary spermatocytes during Stage III of the cycle.
(2) These data suggest that the cell(s) of the seminiferous tubule involved in FSH regulation must be either the type A spermatogonium or the Sertoli cell.
(3) The relative amount of DNA in a somatic cell to that in a spermatogonium averaged 79.2%.
(4) Additionally it also inhibits the process of spermatogonium multiplication in the testis and of the progesterone multiplication in the ovary.
(5) The intermediate spermatogonium contins an ovoid nucleus characterized by one or two nuclei and heterochromatin scattered in the nuceoplasm.
(6) In the basal third of the Sertoli cell, membranous segments that faced a spermatogonium or a migrating spermatocyte displayed forming tight, gap, and adherens junctions.
(7) This finding was interpreted as the result of a single act of non-disjunction taking place in a spermatogonium.
(8) Testosterone bound to target cells initiates their division and decreases duration of spermatogonium mitosis block and delay in primary spermatocyte development increasing the number of germ cells.
(9) In some of the animals, a few isolated seminiferous tubules contained an occasional spermatogonium or primary spermatocyte.
(10) a single spermatogonium gives rise to 32 spermatozoa.
(11) The administration of exogenous testosterone was shown to stimulate DNA synthesis, inhibited by the effect of radiation, in spermatogonium populations of A1-4, intermediate, and B types, and in preleptotene primary spermatocytes; RNA synthesis was increased in the same populations of spermatogonia and pachytene primary spermatocytes.
(12) Each divides to produce a new Ad spermatogonium and a Ap1 spermatogonium during Stage IX of the cycle of the seminiferous epithelium.
(13) Repopulating spermatogenic colonies, found in the seminiferous epithelium after irradiation with fast-fission neutrons, were studied to determine the chance that a stem cell Asingle (As) spermatogonium would complete a self-renewing division (P).
(14) A preliminary report on the selective effect of Vinca rosea L. alkaloids on Type A4 rat spermatogonium is presented.
(15) The nucleus of the type "B" spermatogonium is more spherically shaped with a centrally placed nucleolus and heterochromatin associated with the nuclear envelope.
(16) The type "A" spermatogonium contains an oblong nucleus with one or two shallow infoldings of the nuclear membrane.
(17) Consequently, 32 spermatids can result from each division of an Ad spermatogonium.
(18) Various premeiotic and meiotic stages, from spermatogonium A and B to metaphase 1, were identified in the bull ejaculates.
(19) Pathological and electron microscopic examinations indicated that spermatogenic cells were damaged by MeHg especially spermatogonium and spermatocyte.
(20) Histological examination of rat testis, revealed that the spermatogenesis is arrested at spermatogonium stage in rats fed on protein free diet, and at primary and secondary spermatocyte stage in rats fed on normal but reduced diet.