Interrelationship of age of host, immunity & Plasmodium berghei infection.
D000367:Age Factors; D000818:Animals; D001402:B-Lymphocytes / Q000276:immunology; D008288:Malaria / Q000097:blood / Q000276:immunology*; D010962:Plasmodium berghei; D051381:Rats; D011919:Rats, Inbred Strains; D013601:T-Lymphocytes / Q000276:immunology