Circadian rhythms are endogenous time-keeping mechanisms that regulate physiological processes in response to external light-dark cycles. These rhythms are orchestrated by the suprachiasmatic nucleus ...

Blood was collected at intervals during a 24-hour period from 23 healthy male volunteers on diets containing various amounts of protein; the plasma was assayed for 16 amino acids. Among subjects ...

This is a preview. Log in through your library . Abstract The pineal gland of birds contains one or more circadian oscillators that play a major role in overall temporal organization. We have ...