Study of the initial period of adaptation to microgravity in the rat experiment onboard Cosmos-1667.
D000222:Adaptation, Physiological; D000818:Animals; D008297:Male; D009141:Musculoskeletal System / Q000033:anatomy & histology; D010827:Physiology; D051381:Rats; D011919:Rats, Inbred Strains; D013026:Space Flight; D014893:Weightlessness