Alzheimer's disease (AD) is the most common cause of dementia that arises on a
neuropathological background of amyloid plaques containing β-amyloid (Aβ) derived from …

Oogenesis, the early events of primary oocyte growth (meiotic arrest, synapsis, ribosomal
gene duplication), and folliculogenesis can be seen to particular advantage in the germinal …

Physiological Adaptations for Breeding in Birds is the most current and comprehensive
account of research on avian reproduction. It develops two unique themes: the consideration …

Over the last decade, our knowledge of the gene structure and the regulation of synthesis of
the major egg yolk proteins of oviparous vertebrate and invertebrate species has increased …

Background Liver is an important metabolic organ that plays a critical role in lipid synthesis,
degradation, and transport; however, the molecular regulatory mechanisms of lipid …

Vitellogenin, an ancient animal protein, is the major yolk protein of eggs, where it is used as
a food source during embryogenesis. Here it is shown that vitellogenins, including those …

Progesterone receptors (PRs) mediate the actions of progestin hormones and play important
roles during the reproductive cycle and pregnancy. Since PR expression is known to be …

The comparative approach on how and when vitellogenesis occurs in the diverse
reproductive strategies displayed by aquatic and terrestrial lower vertebrates is presented in …

Estradiol-17β (E2) has long been studied as the primary estrogen involved in sexual
maturation of hens. Due to the oviparous nature of avian species, ovarian production of E2 …

Many environmentally persistent xenobiotic chemicals appear to disrupt normal endocrine
function by acting as ligands for endogenous steroid receptors, including the estrogen …