title: Weightlessness effects on resistance and reactivity of animals.
mesh_terms: D000222:Adaptation, Physiological; D000818:Animals; D001772:Blood Cell Count; D008297:Male; D051381:Rats; D013026:Space Flight; D013312:Stress, Physiological / Q000503:physiopathology*; D014893:Weightlessness / Q000009:adverse effects