Results 251 to 260 of about 93,530 (291)

Spermatozoa in the Peak District

Molecular Reproduction and Development, 2015
imageMol. Reprod. Dev. 83: 8–11, 2016. © 2015 Wiley Periodicals, Inc.
Mariana F, Wolfner, Robert, Montgomerie
openaire   +2 more sources

Spermatozoa repellent as a contraceptive

Contraception, 1979
Early report by Kopp et al. have demonstrated that p-nitrophenyl-glycerol (PNPG) is an effective antiswarming agent in Proteus and that this inhibition may have been caused by PNPG interfering with the negative chemotaxis mechanism in the organism. With an inverted capillary assay, designed to test the motility response of rat epididymal spermatozoa to
W W, Tso, W M, Lee, M Y, Wong
openaire   +2 more sources

Fate of Unejaculated Spermatozoa

Nature, 1967
THE production of spermatozoa does not cease in sexually inactive males1–3, and it becomes necessary to examine the means of disposal of the surplus spermatozoa. The two most likely ways are either that they are voided in the urine or that they are resorbed in the epididymis or vas deferens.
B F, Lino, A W, Braden, K E, Turnbull
openaire   +2 more sources

Spermatozoa Activity Comparator

Andrologia, 2009
Spermatozoen-Motilitats-Comparator Zusammenfassung:  Es wird ein neuartiges Gerat vorgestellt, mit welchem versucht wird, eine objektive Motilitatsbestimmung der Spermatozoen durchzufuhren. Das Prinzip besteht darin, die Spermatozoen in zwei voneinander getrennte Kapillaren einzugeben, wobei in jeder ein anderes Medium enthalten ist, in welches ...
openaire   +2 more sources

Sorbitol Dehydrogenase in Spermatozoa

Nature, 1958
IT has been shown previously that the addition of sorbitol to actively respiring suspensions of washed, motile ram spermatozoa causes an increase in the consumption of oxygen, accompanied by an oxidative conversion of sorbitol to fructose and followed by the aerobic glycolytic breakdown of fructose to lactic acid1.
T E, KING, T, MANN
openaire   +2 more sources

Varicocele and the Morphology Of Spermatozoa

Fertility and Sterility, 1981
It is believed that varicocele is characteristically associated with specific abnormalities of spermatozoal morphology (increased numbers of tapered and amorphous forms). This report summarizes the results of a prospective study of spermatozoal morphology in 208 male partners of infertile couples seen consecutively during an 18-month period.
L J, Rodriguez-Rigau, K D, Smith, E, Steinberger   +2 more
openaire   +2 more sources

Chemotaxis of Rabbit Spermatozoa

Journal of Experimental Biology, 1963
ABSTRACT The aim of the study was to determine whether rabbit eggs’attract’ homologous spermatozoa in vivo. Preliminary experiments showed that, in vitro, rabbit spermatozoa readily and irreversibly attach to the zonae of rat eggs.
openaire   +2 more sources

Antigenicity of Spermatozoa

Fertility and Sterility, 1961
S, KATSH, G F, KATSH
openaire   +2 more sources

Cryopreservation of Avian Spermatozoa

2003
This chapter describes a simple system for cryopreservation of avian spermatozoa as pellets, formed by dropping volumes of sperm suspension directly into liquid nitrogen with dimethylacetamide as cryoprotectant. The method originates from the group at the Research Institute of Farm Animal Breeding and Genetics at St. Petersburg-Pushkin and is described
openaire   +3 more sources

Mitochondria: their role in spermatozoa and in male infertility

Human Reproduction Update, 2021
Pascale May Panloup, Magalie Boguenet, Pascal Reynier   +2 more
exaly