Zobrazeno 1 - 10
of 47
pro vyhledávání: '"J.L. Courtens"'
Autor:
J.L. Courtens, L. Plöen
Publikováno v:
Biology of Reproduction. 61:154-161
In order to test the hypothesis that a lack of energy could be a cause of germ cell death at high temperatures, cryptorchid rats testes were infused with lactate, delivered by osmotic pumps over 3-15 days. In cryptorchid testes, the spermatids and sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::630797fedd1e36ea9ed0d13a8a5fbb87
https://doi.org/10.1095/biolreprod61.1.154
https://doi.org/10.1095/biolreprod61.1.154
Autor:
F Haour, Marie-Odile Liénard, Annie Cavalier, E Gomez, J.L. Courtens, G. Morel, Bernard Jégou
Publikováno v:
Biology of Reproduction. 56:1513-1526
Despite clear indications of interleukin-1 (IL-1) action on Sertoli and germ cells, previous studies failed to detect IL-1 receptors (IL-1R) within the seminiferous tubules. Here, we investigated the existence of the type I signaling receptor (IL-1RI
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44873e58f26c6a5c496c5f5e0c69435e
https://doi.org/10.1095/biolreprod56.6.1513
https://doi.org/10.1095/biolreprod56.6.1513
Autor:
A. Depeiges, J.L. Courtens
Publikováno v:
Journal of Ultrastructure Research. 90:203-220
To the common aspects of spermiogenesis in Reptilia, several new organelles are described in the lizard. One or two nuclear pouches, formed by the invagination of the nuclear envelope, contain a substance similar to that of the perinuclear substance.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5dc8a69b57185620108f9e74762bb32b
https://doi.org/10.1016/0889-1605(85)90110-7
https://doi.org/10.1016/0889-1605(85)90110-7
Autor:
J.L. Courtens
Publikováno v:
Journal of Ultrastructure Research. 65:173-181
A cytochemical study at the ultrastructural level shows that several carbohydrate-containing substances are present in the acroplasm as soon as the proacrosomic vesicles are synthesized. These substances fill the acrosomic granule during the early st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc875c37d76051433d85555ca8fb2006
https://doi.org/10.1016/s0022-5320(78)90054-0
https://doi.org/10.1016/s0022-5320(78)90054-0
Publikováno v:
Andrologia. 14(6)
Zusammenfassung Bindung von Nebenhodenproteinen an Spermatozoen vom Widder Aus dem corpus epididymidis extrahierte und an Goldkolloid gebundene Glykoproteine und Proteine werden spezifisch an die Plasmamembran von Spermatozoen gebunden. Bei Spermatoz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdeb6cc0c2d9b9a03d09c8b8dc89c46b
https://pubmed.ncbi.nlm.nih.gov/7165124
https://pubmed.ncbi.nlm.nih.gov/7165124
Publikováno v:
Reproduction Nutrition Development
Reproduction Nutrition Development, EDP Sciences, 1989, 29, pp.577-587
Reproduction Nutrition Development, EDP Sciences, 1989, 29, pp.577-587
In this preliminary work, using pig embryos ultrastructural immunocytochemistry with polyclonal antibodies against purified histones was used to demonstrate both their localization and the time of their appearance in pronuclei, from 15 h after ovulat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5976c25866fec976787cf6da09dd9b00
https://hal.science/hal-00899091
https://hal.science/hal-00899091
Publikováno v:
Journal of ultrastructure research. 57(1)
The perinuclear substance (PNS) in boar, bull, ram and rabbit spermatozoa is described. The PNS is present as a thin, continuous layer of lysine-rich proteins located between the nucleus on one side and the acrosome and postacrosomal lamina on the ot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25bbfcc072961cb88fc344bd794d6493
https://pubmed.ncbi.nlm.nih.gov/978783
https://pubmed.ncbi.nlm.nih.gov/978783
Autor:
J.L. Courtens
Publikováno v:
Journal of ultrastructure research. 65(2)
The development of the acrosomes in ram spermatids was studied using morphometric methods. Evidence is given for a rapid increase in the acrosome volume and area, in young spermatids, followed by a decrease in these two parameters in older spermatids
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3705b35b014785a349417faa391c7654
https://pubmed.ncbi.nlm.nih.gov/731785
https://pubmed.ncbi.nlm.nih.gov/731785
Autor:
J.L. Courtens
Publikováno v:
Animal Reproduction Science. 20:79-80
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8baea2716b6d5b0a2ec2932c9e225cdb
https://doi.org/10.1016/0378-4320(89)90116-4
https://doi.org/10.1016/0378-4320(89)90116-4
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