title: Onset and duration of the physiological weaning period for infant rats reared in nests of different sizes.
mesh_terms: D000367:Age Factors; D000818:Animals; D001835:Body Weight; D005260:Female; D006128:Growth; D008892:Milk; D051381:Rats; D013326:Strontium Radioisotopes; D013997:Time Factors; D014886:Weaning
chemical_list: D013326:Strontium Radioisotopes