title: Secondary response in vitro to antigen phi x 174 phage.
mesh_terms: D000818:Animals; D000906:Antibodies / Q000032:analysis; D000917:Antibody Formation; D002499:Centrifugation, Density Gradient; D003090:Coliphages / Q000276:immunology*; D046508:Culture Techniques; D009500:Neutralization Tests; D011817:Rabbits; D013154:Spleen / Q000276:immunology*
chemical_list: D000906:Antibodies