Sperm experience intense and varied selection that dramatically impacts the evolution of
sperm quality. Selection acts to ensure that sperm are fertilization-competent and able to …

A variety of evolutionary processes has led to the development of different organs to ensure
that internal fertilization occur successfully. Fallopian tubes are a particularly interesting …

Successful pregnancy requires an appropriate communication between the mother and the
embryo. Recently, exosomes and microvesicles, both membrane-bound extracellular …

Recalling the evolutionary sequence of development first of gonad and subsequently of
oviducts, ovarian endocrine regulation of all known components of oviduct physiology is …

The oviductal fluid is the first environment experienced by mammalian embryos at the very
beginning of life. However, it has long been believed that the oviductal environment was not …

The aim of this study was to evaluate the distribution of inhibin/activin alpha, beta (A) and
beta (B) subunits and follistatin in immature oocytes and in matured oocytes before and after …

The capacity for sperm storage within the female reproductive tract occurs widely across all
groups of vertebrate species and is exceptionally well developed in some reptiles (maximum …

Using a digital videomicroscopic analysis system in the bovine, we showed that the
mechanisms of transport caused by ciliary beating are distinctly different in ampulla and …

Background Sex allocation of offspring in mammals is usually considered as a matter of
chance, being dependent on whether an X-or a Y-chromosome-bearing spermatozoon …

In mammals, sperm ascension within the female reproductive tract involves a transient
adhesion to the caudal isthmus of the oviduct. Sperm adhesion to this specialized region …