JF Gudernatsch, an anatomist at Cornell Medical School, traveled by ship to the Naples
Zoological Station in the summer of 1910. He took along various mammalian organs …

Metamorphosis, classically defined as a spectacular post-embryonic transition, is well
exemplified by the transformation of a tadpole into a frog. It implies the appearance of new …

Life history theory seeks to explain the evolution of the major features of life cycles by
analyzing the ecological factors that shape age-specific schedules of growth, reproduction …

We investigated whether exposure to environmentally relevant concentrations of the
bactericidal agent, triclosan, induces changes in the thyroid hormone-mediated process of …

Background There is increasing evidence in humans and in experimental animals for a
relationship between exposure to specific environmental chemicals and perturbations in …

Thyroid hormones (THs) are well-known regulators of development and metabolism in
vertebrates. There is increasing evidence that THs are also involved in gonadal …

The thyroid hormone receptors, TRα1, TRβ1 and other subtypes, are members of the
nuclear receptor superfamily that mediate the action of thyroid hormone signaling in …

Background Chronic exposure to excess arsenic in drinking water has been strongly
associated with increased risks of multiple cancers, diabetes, heart disease, and …

A wide range of chemicals have been identified as endocrine disrupting chemicals (EDCs)
in vertebrate species. Most studies of EDCs have focused on exposure of both male and …

Publisher Summary Amphibians exhibit considerable diversity in behavioral, physiological,
and life history strategies. They are geographically widespread, occupying a diverse range …