Effects of age and genetic background on the antibody response in inbred rats.
D000375:Aging; D000818:Animals; D000917:Antibody Formation; D001835:Body Weight; D005260:Female; D007109:Immunity; D008297:Male; D009929:Organ Size; D010587:Phagocytosis; D051381:Rats; D011912:Rats, Inbred ACI; D011916:Rats, Inbred F344; D011919:Rats, Inbred Strains / Q000276:immunology*; D012737:Sex Factors; D013154:Spleen / Q000166:cytology / Q000276:immunology; D013950:Thymus Gland / Q000166:cytology / Q000276:immunology