background: glycosidases profusion in male reproductive fluids suggests a possible relationship with sperm function. although hexosaminidase (hex) is the most active glycosidase in epididymal fluid and seminal plasma, as well as in spermatozoa, glucosidase is considered a marker for epididymal function and azoospermia. objective: the aim of this study was to determine hex activity in seminal pl...

Reproductive traits experience high levels of selection because of their direct ties to fitness, often resulting in rapid adaptive evolution. Much of the work in this area has focused on male reproductive traits. However, a more comprehensive understanding of female reproductive adaptations and their relationship to male characters is crucial to uncover the relative roles of sexual cooperation ...

Major achievements in reproductive biology and endocrinology have been made during the last year. Two major areas show intense activity and have revised our concepts. There has been continuous high activity in the stem cell field and the advances of stem cell biology are now creating novel possibilities of assisted-reproduction technologies for human use. Another area of interesting development...