How To Use Spermatogenesis In A Sentence
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Spermatogonia are the mitotic germ cells of the testis from which sperm arise by spermatogenesis.
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The facts concerning cryptorchidism, that is to say, failure of the descent of the testes in Mammals, seem to show that the hormone of the testis is not derived from semen or spermatogenesis, for in the testes which have remained in the abdomen there is no spermatogenesis, while the interstitial cells are present, and the animals in some cases exhibit normal or even excessive sexual instinct, and all the male characteristics are well marked.
Hormones and Heredity
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Moreover, testicular histology of F1 and backcross males showed in some cases a breakdown in spermatogenesis.
The Rise of Human Chromosome 2: Beyond the Deme - The Panda's Thumb
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Testicular tissue showing spermatogenesis to the level of secondary spermatocytes.
A childless man appeal philonthroists for treatment
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Its production - spermatogenesis - involves cell divisions and reorganization of chromosomal material, which generates genetic diversity.
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In principle, non-disjunction during spermatogenesis could lead to aneuploidy, which might cause fetal death.
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Although no fair of symptomatic scalp was released in congenital trials, and no neonatal men for poor spermatogenesis are offered, bubbles should notify suitable of the year of long-term edematous effects.
Wii-volution
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The strategy for spermatogenesis - the production of sperm - is different.
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One exception has been reported in the triplefin blenny, Axoclinus nigricaudus, in which there was no difference in the relative investment into spermatogenesis between territorial and nonterritorial satellite males.
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We discussed spermatogenesis -- how we got from a diploid spermatogonial stem cell to a haploid spermatid -- and then spermiogenesis -- the process by which the spermatids acquire the features of spermatozoa: tails, acrosomes and the like.
ScienceBlogs Channel : Life Science
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Studies on the process of spermatogenesis and epididymal sperm reserve in water buffalo (Bubalus bubalis).
8 Reproduction
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Nova the Cat said, “The problem is that if you perturb the hormones enough to stop spermatogenesis, you can also get unwanted side effects such as loss of libido.”
I Want My Period, At Least Until Menopause
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The male generative glands also contain Sertoli cells, which require testosterone for spermatogenesis, which is the synthesis of spermatozoa.
CreationWiki - Recent changes [en]
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We observed complete interference for both oogenesis and spermatogenesis in hermaphrodite animals and for the entire lengths of both an autosome and the X chromosome.
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The cytological processes of spermatogenesis and oogenesis are quite distinct.
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However, in cryptorchid testis, in which most germ cells undergo apoptosis, only a few of SRG4 is observed, suggesting that SRG4 may be as a specific marker to evaluate the process of spermatogenesis.
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The constant effect over time argues in favour of either paternal germ cell mutation or other damage to spermatogenic stem cells or the testicular cells necessary for supporting spermatogenesis.
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This research is particularly important in helping us to understand more about spermatogenesis, the biological process in which sperm is produced.
Scientists Produce Artificial Sperm | Impact Lab
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During the process of spermatogenesis in animal species, protamines replace histones and bind sperm DNA.
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When teaching students, I describe the processes of spermatogenesis, ovulation and fertilisation as a continuum with implantation and early pregnancy development.
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Abnormities of SC resulting from genetic mutation can directly induce arrest of spermatogenesis in rat model.
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Mancini M, Carmignani L, Gazzano G, Sagone P, Gadda F, et al. (2007) High prevalence of testicular cancer in azoospermic men without spermatogenesis.
PLoS ONE Alerts: New Articles
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I warmed to the discussion, eager to share my knowledge of meiosis and mitosis, spermatogenesis and seminal vesicles, ovulation and the menstrual cycle.
Archive 2006-01-01
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The problem is that if you perturb the hormones enough to stop spermatogenesis, you can also get unwanted side effects such as loss of libido.
I Want My Period, At Least Until Menopause
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This small protein replaces histones and binds DNA in the process of spermatogenesis.
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Both of the other retrogenes have parents involved in spermatogenesis, so it is reasonable to assume that the extra copies add functionality to the testes that carry them.
Human Evolution: It's all in the testes - The Panda's Thumb
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Moreover, testicular histology of F1 and backcross males showed in some cases a breakdown in spermatogenesis.
The Rise of Human Chromosome 2: Beyond the Deme - The Panda's Thumb
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Reproductive maturity is achieved with the establishment of regular menstruation and ovulation in females and mature spermatogenesis in males.
