Temperature dependence of antigen-specific rosette formation by lymphocytes from immunised mice.
Spleen cell suspensions from mice undergoing a secondary response to sheep erythrocytes (SRBC) contained about one tenth as many specific antigen-binding, rosette-forming cells (RFC) when they had been washed at 37 degrees C instead of 4 degrees C before rosetting. This difference was correlated with the presence of IgG anti-SRBC antibody in the serum, and the 37 degrees C washings of immunised spleen cells could passively allergise non-immune spleen cells at 4 degrees C for specific rosette formation which was inhibitable by anti-mouse F(ab)2 serum. The RFC from actively immunised mice were lymphocytes and not macrophages by morphological and cytochemical criteria. It is suggested that the 37 degrees C-labile RFC are lymphocytes to which IgG antibodies bind in the cold. These data indicate that in the use of antigen-binding cell assays to monitor immunological responses, it is necessary to wash lymphocytes at 37 degrees C before testing.
D000818:Animals; D000906:Antibodies; D000941:Antigens; D000939:Epitopes; D004912:Erythrocytes / Q000276:immunology*; D007116:Immunization, Passive; D007074:Immunoglobulin G; D007158:Immunologic Techniques; D066298:In Vitro Techniques; D008214:Lymphocytes / Q000276:immunology*; D051379:Mice; D008807:Mice, Inbred BALB C; D013154:Spleen / Q000276:immunology; D013696:Temperature
D000906:Antibodies; D000941:Antigens; D000939:Epitopes; D007074:Immunoglobulin G