Prostasome-Like Particles in Stallion Semen1

Prostasome-like vesicles stimulate acrosome reaction of pig spermatozoa

BACKGROUND The presence of small membranous particles characterizes the male genital fluids of different mammalian species. The influence of semen vesicles, denominated prostasomes, on sperm functional properties has been well documented in humans, but their biological activity is scarcely known in other species. The present work investigated prostasome-like vesicles in pig semen for their abil...

Avian lymphoid leukosis: Virus-like particles in kidney Cells

Prostasome Involvement in the Development and Growth of Prostate Cancer

Prostasomes are extracellularly occurring submicron, membrane-surrounded organelles produced by the epithelial cells of the prostate and present in semen after secretion. Even dedifferentiated prostate cancer cells have preserved their ability to produce and export prostasomes to the extracellular space. The precise physiological role of prostasomes is not known, although some of their properti...

avian lymphoid leukosis: virus-like particles in kidney cells

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Stallion Sexual Behavior

Descriptions of reproductive behavior of equids under free-running conditions are available in a number of resources.* These can be very instructive toward understanding the basic nature of stallions and how behavior varies under domestic breeding conditions. Most domestic stallions are handled under halter for live breeding or collection of semen. As opposed to the full complement of harem for...