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[Effect of stromal fibroblasts on antibody formation in cultures deficient in A-cells]
Stromal fibroblasts from the monolayer cultures of the rabbit thymus, spleen, and bone marrow when added to suspension cultures of non-adherent rabbit spleen cells had a significant effect on the response of the plaque-forming cells (PFC). Thymus-derived stromal fibroblasts caused an increase in the number of PFC, and bone marrow stromal fibroblasts suppressed the antibody formation in these cultures. Spleen-derived stromal fibroblasts influenced the PFC response similarly to adherent cells. Thymus-derived stromal fibroblasts irradiated by 5000 R influenced the PFC response in the same way as non-irradiated cells. The action of stromal fibroblasts on the antibody formation in the cultures depended on their attachment to the culture flask surface.
Stromal fibroblasts from the monolayer cultures of the rabbit thymus, spleen, and bone marrow when added to suspension cultures of non-adherent rabbit spleen cells had a significant effect on the response of the plaque-forming cells (PFC). Thymus-derived stromal fibroblasts caused an increase in the number of PFC, and bone marrow stromal fibroblasts suppressed the antibody formation in these cultures. Spleen-derived stromal fibroblasts influenced the PFC response similarly to adherent cells. Thymus-derived stromal fibroblasts irradiated by 5000 R influenced the PFC response in the same way as non-irradiated cells. The action of stromal fibroblasts on the antibody formation in the cultures depended on their attachment to the culture flask surface.