Interaction of age and exercise on organ and cellular development.
D000311:Adrenal Glands / Q000254:growth & development; D000367:Age Factors; D000818:Animals; D001835:Body Weight; D006321:Heart / Q000254:growth & development; D007668:Kidney / Q000254:growth & development; D008099:Liver / Q000254:growth & development; D008297:Male; D009929:Organ Size; D005082:Physical Exertion; D051381:Rats; D013154:Spleen / Q000254:growth & development; D013550:Swimming