Age as a factor in open-field responsiveness in the white rat.
D000367:Age Factors; D000818:Animals; D001522:Behavior, Animal; D003672:Defecation; D004924:Escape Reaction; D005260:Female; D008027:Light; D008297:Male; D051381:Rats; D012737:Sex Factors; D013312:Stress, Physiological / Q000503:physiopathology*