Different amounts of phi X 174 phage necesary for evoking a primary antibody response in newborn and adult animals.
D000367:Age Factors; D000818:Animals; D000831:Animals, Newborn; D000917:Antibody Formation; D000941:Antigens; D001435:Bacteriophages / Q000276:immunology*; D009500:Neutralization Tests; D011817:Rabbits; D013552:Swine; D013997:Time Factors
D000941:Antigens