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Mostrando ítems 11-20 de 1920
Differences in sperm morphology in foam-nesting leptodactyline frogs (Anura, Leptodactylidae)
(Wiley-Blackwell, 2017-01-01)
Sperm morphology is diverse among vertebrates and is influenced by the reproductive strategies adopted by species. In anurans, sperm morphology is associated with reproductive modes and mating systems. Here, we describe ...
Intra-male sperm variability: Is there heteromorphism in scorpions (Arachnida, Scorpiones)?
(Elsevier Gmbh, 2016-03)
There is a natural range of variation in sperm morphology inside males. This variation may be adaptive or a result of poor quality control of sperm production. Sperm aggregates can also show different morphologies inside ...
Physical and morphological characteristics of the first three jets of pêga jackasses sperm-rich fraction
(2016-01-01)
The first three jets of the sperm-rich fraction of Pêga jackasses were collected and assessed separately. Five fertile Pêga jackasses were used as semen donors and underwent fractionated semen collection, using an open ...
Activity of ethylene oxide in the mouse sperm morphology test
(Archives of Toxicology, 1987)
Inhaled ethylene oxide induced an increased frequency
of abnormal sperm cells in mice when the animals
were treated at 200 and 400 ppm (6 h per day; 5 days) in
three stages of cell development: spermatozoa, spermatid
and ...
Intracytoplasmic morphologically selected sperm injection benefits for patients with oligoasthenozoospermia according to the 2010 World Health Organization reference values
(Elsevier B.V., 2011-06-01)
The comparison between the outcomes of intracytoplasmic morphologically selected sperm injection performed in couples with male factor infertility according to the World Health Organization guidelines from 1999 and 2010 ...
Intracytoplasmic morphologically selected sperm injection benefits for patients with oligoasthenozoospermia according to the 2010 World Health Organization reference values
(Elsevier B.V., 2011-06-01)
The comparison between the outcomes of intracytoplasmic morphologically selected sperm injection performed in couples with male factor infertility according to the World Health Organization guidelines from 1999 and 2010 ...
Organic selenium increases PHGPx, but does not affect quality sperm in raw boar semen
(ElsevierAmsterdã, 2014-06)
This study assessed the effects of feeding organic selenium (Se) on sperm morphology, motility, membrane integrity and lipidic peroxidation, also on sperm ATP and phospholipid hydroperoxide glutathione peroxidase (PHGPx) ...
Determinación de la variabilidad en la condensación de la cromatina espermática y alfa-glucosidasa seminal con relación al espermiograma
(Sociedad Médica de Santiago, 2000)
Sperm Motility Should be Assessed in Fresh Sperm and After a Sperm Washing Procedure
(Taylor & Francis Online, 1992)
A prospective study was carried out on semen samples from 118 consecutive unselected men attending our infertility clinic to determine whether sperm motility may be affected by seminal plasma. The incidence of asthenozoospermia ...