Results 171 to 180 of about 16,641 (207)

Glycogen in Spermatidic Arrest

1971
Glycogen probably plays an important role in the maturation of germinal cells. Intratubular glycogen is abundant in the prepubertal stage; it diminishes remarkably at the beginning of puberty, reappears during the period of complete sexual maturation and the highest increase is found in the tubules in involution.
A. Fabbrini, M. Re, M. Savioli, G. Spera
openaire   +1 more source

Ultrastructural Characteristics of Idiopathic Spermatidic Arrest

Archives of Andrology, 1979
Previous studies on some cases of idiopathic spermatidic arrest showed an anomaly in glucose metabolism, in particular decreased utilization of glycogen at stage 3 of spermatogenesis, when condensation of the spermatid head commences. Histological patterns seen on light microscopy confirmed the reduced utilization of glycogen at stage 3 of ...
M, Re, F, Carpino, G, Familiari, M, Iannitelli, A, Vicari   +4 more
openaire   +2 more sources

[In-vitro differentiation of human testicular round spermatids to elongating spermatids].

Zhonghua nan ke xue = National journal of andrology, 2007
To investigate the differentiation of human testicular spermatogenic cells during in vitro culture.Testicular cells of obstructive azoospermic patients' testis biopsies were dispersed employing mechanic methods. Then, (1) mixed testicular cells were applied to in vitro culture, and changes of the ratio of elongating spermatids and all round cells were ...
Zhi-ming, Cai, Min, Shi, Yun, Long, Bo, Song, Yong-yan, Cui, Hui, Zhu, Yao-ting, Gui   +6 more
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[Advances in microinsemination with spermatid].

Zhonghua nan ke xue = National journal of andrology, 2007
Men with non-obstructive azoospermia(NOA) can now be treated by using intra-oocyte round spermatid injection(ROSI) or elongated spermatid injection(ELSI). Spermatids can be retrieved from semen or from testis biopsy specimens. But the rates of fertilization and pregnancy with spermatids have been disappointing.
Pei-Yuan, Zhu, Yu-Feng, Huang
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Spermatids

2018
Barry R. Zirkin, Erwin Goldberg
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Spermatid injection

Human Reproduction, 1999
Y. Prapas, A. Chatziparasidou, P. Vanderzwalmen, M. Nijs, N. Prapas, B. Lejeune, G. Vlassis, R. Schoysman   +7 more
openaire   +1 more source

Blastocyst development after fertilization with in vitro spermatids derived from nonhuman primate embryonic stem cells

F&S Science, 2021
Gerald Schatten, Michael White, In Cho   +2 more
exaly  

Radiosensitivity of Spermatids and Spermatozoa in Mice

International Journal of Radiation Biology and Related Studies in Physics, Chemistry and Medicine, 1963
O S, REDDI, K, RAMAKRISHNA
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spermatid, n.

2023
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Spermatid injection: reconsidering spermatid injection.

Human reproduction (Oxford, England), 1999
Y, Prapas, A, Chatziparasidou, P, Vanderzwalmen, M, Nijs, N, Prapas, B, Lejeune, G, Vlassis, R, Schoysman   +7 more
openaire   +1 more source