Researchers observe how fluctuations in ovarian hormones shape the structure and function in the mouse hippocampus, with ...

The menstrual cycle is the monthly series of hormone-driven events in the body that culminates in either a menstrual period or pregnancy. Each menstrual cycle starts on the first day of a period ...

National Snow and Ice Data Center, Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Boulder, Colorado 08309, United States Harvard John A. Paulson School ...