Results 241 to 250 of about 316,099 (294)

Integrating Biobanking Into Conservation Practice: The Development and Impact of the EAZA Biobank

open access: yesZoo Biology, EarlyView.
Overview of the structural setup and terms of service of the EAZA Biobank, Left panel illustrates for samples stored at ‐80ºC sampling (1), submission (2), storage (3) in one of the four hubs hosted at: Antwerp Zoo (Belgium), Royal Zoological Society of Scotland (RZSS) (United Kingdom), Leibniz Institute for Zoo and Wildlife Research (IZW) (Germany ...
Christina Hvilsom   +12 more
wiley   +1 more source

Recurrent Pregnancy Loss: A Couple-Based Framework for Integrating Paternal Assessment. [PDF]

open access: yesBiomedicines
Kritsotaki N   +4 more
europepmc   +1 more source

The Influence of Sperm Origin on Function, Preservation and Embryo Development in South American Camelids. [PDF]

open access: yesReprod Domest Anim
Giuliano SM   +6 more
europepmc   +1 more source

Chytridiomycosis infection and heat compromise sperm quality in a threatened frog. [PDF]

open access: yesJ Exp Biol
Upton R   +9 more
europepmc   +1 more source

Sperm size and sperm competition in birds

Proceedings of the Royal Society of London. Series B: Biological Sciences, 1992
In a sample of 20 species of North American passerine birds we found no relation between sperm size and mating system like that previously reported in mammals (Gomendio & Roldan (Proc. R. Soc. Lond. B 243, 181 (1991)). Instead, we found a positive correlation between sperm length and the length of female sperm storage tubules (SSTS) and a negative ...
J V, Briskie, R, Montgomerie
openaire   +2 more sources

Sperm‐sperm associations in the loris epididymis

Gamete Research, 1987
AbstractIn a few mammals, the passage of maturing spermatozoa through the epididymis is characterized by development of persistent associations between one or more neighboring cells over the acrosomal region. The converse situation is described here in the loris, Nycticebus coucang, a prosimian primate.
D M, Phillips, J M, Bedford
openaire   +2 more sources

Sperm Antibodies

American Journal of Reproductive Immunology, 1992
ABSTRACT: Antisperm antibodies (ASA) occur in 1% to 30% of infertile couples. Mechanisms by which ASA impair fertility include prevention of fertilization by decreasing acrosome reaction and/or zona pellucida binding, and postfertilization effects. Treatment for ASA involves assisted reproductive technologies.
A J, Peters, C B, Coulam
openaire   +2 more sources

Sperm centriole disfunction and sperm immotility

Molecular and Cellular Endocrinology, 2000
The two main causes of complete or nearly complete asthenozoospermia are necrozoospermia (presence of only non-viable spermatozoa) and the different ultrastructural abnormalities of spermatozoa. Ultrastructural alterations may affect also the function of the sperm centrosome, which can result in impaired motility.
openaire   +2 more sources

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