It is well known that female reproduction ability decreases during the forth decade of life due
to age-related changes in oocyte quality and quantity; although the number of women trying …

In human pregnancy, successful placentation and remodelling of the uterine vasculature
require the integration of a number of stages, which are crucial for a healthy pregnancy. As …

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 …

Since the establishment of in vitro fertilization, it became evident that almost half of the
couples failed to achieve fertilization and this phenomenon was attributed to a male gamete …

Fertilization is the process by which haploid gametes, sperm and egg, unite to produce a
genetically distinct individual. Interest in this area has exploded in recent years. Here are …

Following the sequencing of the human genome and many other organisms, research on
protein-coding genes and their functions (functional genomics) has intensified …

A block to polyspermy is required for successful fertilisation and embryo survival in
mammals. A higher incidence of polyspermy is observed during in vitro fertilisation (IVF) …

Background Follicle selection in chickens refers to the process of selecting one follicle from
a group of small yellow follicles (SY, 6–8 mm in diameter) for development into 12–15 mm …

At fertilization, spermatozoa bind to the zona pellucida (ZP1, ZP2, ZP3) surrounding
ovulated mouse eggs, undergo acrosome exocytosis and penetrate the zona matrix before …

By adopting internal fertilization, the meeting of both gametes-the sperm and the egg-and
thus the highly coordinated sequence of interactions leading to fertilization, occur in the …