title: Sex differences in circadian wheel running rhythms in the Mongolian gerbil.
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D005260:Female; D005849:Gerbillinae; D008027:Light; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D012737:Sex Factors; D013997:Time Factors