The spermatozoa of most fish species are immotile in the testis and seminal plasma.
Therefore, motility is induced after the spermatozoa are released into the aqueous …

Capacitation is an important physiological pre-requisite before the sperm cell can acrosome
react and fertilize the oocyte. Recent reports from several laboratories have amply …

The molecular basis of mammalian sperm capacitation, defined functionally as those
processes that confer on the sperm the acquisition of fertilization-competence either in vivo …

In the accompanying report (Visconti, PE, Bailey, JL, Moore, GD, Pan, D., Olds-Clarke, P.
and Kopf, GS (1995) Development, 121, 1129–1137) we demonstrated that the tyrosine …

A-kinase anchoring proteins (AKAPs) tether cyclic AMP-dependent protein kinases and
thereby localize phosphorylation of target proteins and initiation of signal-transduction …

Recently, a low molecular weight factor, which specifically stimulates sperm adenylate
cyclase, was found in porcine seminal plasma (Okamura, N., and Sugita, Y.(1983) J. Biol …

Because it is generally accepted that a high percentage of poorly motile or immotile sperm
will adversely affect male fertility, analysis of sperm motility is a central part of the evaluation …

The 9+ 2 microtubule arrangement is the most conserved axonemal configuration,
suggesting that this organization has been retained under evolutionary pressure for crucial …

The aim of this study was to test the suitability of “pattern analysis” for the exploration of data
provided by computer-assisted semen analysis methods. Data sets derived from the …

In salmonid fish, spermatozoa taken from the testes are immotile, but acquire motility during
their passage through the sperm duct. Using male masu salmon (Oncorhynchus masou), we …