title: Splenic focus assay.
authors.forename: B G
authors.initials: BG
authors.lastname: Froscher
authors.forename: N R
authors.initials: NR
authors.lastname: Klinman
mesh_terms: D000818:Animals; D000917:Antibody Formation; D001402:B-Lymphocytes / Q000276:immunology* / Q000637:transplantation; D046508:Culture Techniques / Q000379:methods; D007116:Immunization, Passive; D007158:Immunologic Techniques; D008213:Lymphocyte Activation; D051379:Mice; D013154:Spleen / Q000276:immunology