We describe the ovarian histology and characterize the folliculogenesis of adult females of
Caiman crocodilus in order to compare them with other species of Reptilia. The gonad has a …

We studied anatomical and functional aspects of the reproductive system of females of the
Magdalena river stingray Potamotrygon magdalenae using microscopic and macroscopic …

The exposure to environmental toxicants such cadmium (Cd) is an important research area
in wildlife protection. In this study, the effect of Cd oral administration on the ovarian structure …

In the lacertid Podarcis siculus the reproductive cycle is typically biphasic, with alternate
recrudescence (Spring and Fall) and resting (Summer and Winter) phases. This study aimed …

We studied the ultrastructural organization of the ovarian follicles in a placentotrophic
Andean lizard of the genus Mabuya. The oocyte of the primary follicle is surrounded by a …

The activins and inhibins are glycoproteins with a role in the follicular development of
vertebrates, that are found in follicular fluid and somatic follicular cells, with a different …

Oogonesis is the process by which the ovarian germ cells mature into eggs to be fertilized.
The process occurs through several phases: 1) specification and formation of the primary …

Investigation of embryos, neonates, sub-adult and adult female Torpedo marmorata showed
that oogenesis is immediate. It begins very early in development and continues, in its …

The pattern of vitellogenesis is similar in all non-mammalian vertebrates: the liver, under
oestrogenic stimulus, synthesizes vitellogenin (VTG) that, via the maternal circulation, is …

Pyriforms are ovarian follicle nurse cells that undergo apoptosis at the end of
previtellogenesis and are completely eliminated by the epithelium. This event is …