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Resurrected Steller’s sea cow hemoglobin exhibits novel functional traits underlying their adaptation to the sub-Arctic.

Glucocorticoids are assumed to reflect 'stress,' but they increase proportionally to the increase in metabolic rate induced by stressors, leading us to propose that glucocorticoids reflect metabolic rate, not stress.

Structures of a transition metal transporter spanning the entire Mn²⁺ transport cycle reveal distinct coordination geometries and dynamic polar networks that enable Mn²⁺ import, and a Cd²⁺-bound structure helps explain how Cd²⁺ behaves differently as a substrate.

The tail domain of Myosin III binds to and cross-links actin bundling protein Espin1 and thus modulates higher order actin bundle structures in cellular processes such as stereocilia and microvilli.

During the evolution of amniotes, the transformation of branchial arches coincided with the drastic remodeling of the ancestral extrinsic cardiac arteries, giving rise to novel ventricular coronary arteries that are unique to amniotes.

A novel thermoregulatory mechanism in blood-sucking insects, vectors of human disease, is described using a functional-morphological approach.

Islands of non-methylated DNA are shown to perform a similar epigenetic role in many different vertebrate species.

Temperature-sensing neurons in the Drosophila brain cooperate with the central circadian clock to help regulate body temperature.