title: Some aspects of the growth of rats.
abstract: The first quantitatively significant phase of growth for the rats under investigation was finished at body weights of 260 g in females and 410 g in males. During this phase only growth will influence the energy requirements of the rat. The sex-dependent difference in size will be discussed; it is probably caused by the fact that the period of marked cell division activity lasts slightly more than one week longer in male than in female rats.
mesh_terms: D000367:Age Factors; D000818:Animals; D001835:Body Weight; D001846:Bone Development; D005260:Female; D008297:Male; D051381:Rats / Q000254:growth & development*; D012737:Sex Factors; D013623:Tail / Q000254:growth & development