title: Spontaneous uterine activity in nonpregnant primates (Macaca mulatta).
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D005260:Female; D000882:Haplorhini; D008598:Menstruation; D009119:Muscle Contraction; D010507:Periodicity; D011312:Pressure; D014599:Uterus / Q000502:physiology*