Circadian rhythms are governed by a master clock, a group of neurons called the suprachiasmatic nucleus, located in a region of the brain called the hypothalamus. This master clock translates cues ...

Circadian rhythms are the regular, daily cycles of biological processes or activities, including the regular and predictable variation in the levels of many circulating hormones, ions and the ...

The modulating signal then comes from the bacteria's 24-hour circadian clock, which acts as an internal time-keeping mechanism. This finding answers a long-standing question in cell biology -- how ...

Blocking circadian signals dramatically slowed glioblastoma growth and disease progression, the WashU scientists discovered. This process worked both in cells in a dish and in tumor-bearing ...