... blotting and immunofluorescence techniques to demonstrate for the first time that pig spermatozoa express PPARγ. To investigate the functional role of PPARγ in pig sperm, we evaluated its action on different events that characterize the biology of sperm cells, i.e. motility, capacitation, viability...

... are fertilised using spermatozoa that are deposited directly into the brood pouch via an internal sperm duct. Anatomical dissections showed, however, not only that direct sperm deposition into the pouch is physically impossible, but that spermatozoa must somehow travel a significant distance (>4 mm) outside...

... and thread-shaped `clots', in which a soluble-phase MAP may persist as long as the clots keep their compact form. Additional experiments involving the incubation of spawned spermatozoa at increasing Triton X-100 concentrations demonstrated that MAP is also strongly associated with sperm cells. These results...

... echinoderms spermatozoa chemoattractant starfish peptide sequence antibody Pycnopodia helianthoides Sperm chemotaxis has been described in numerous species from four invertebrate phyla: Cnidaria, Mollusca, Echinodermata and Urochordata ( Miller, 1985 a ). Detailed plotting of sperm trails...

...Sumio Ishijima; Hideo Mohri ABSTRACT Flagellar movement of golden hamster spermatozoa obtained from the testis and the caput and cauda epididymides was observed by a light microscope while holding them at their heads with a micropipette. Flagellar movement of capacitated spermatozoa...