Fig. 8.
Effect of gamma irradiation on the immune tolerance induced by transfusions of UV-B–irradiated leukocytes.
Tolerant and naive CBA mice were irradiated with 0, 1, 2, or 4 Gy gamma irradiation and challenged with 2 weekly intravenous infusions of a full immunogenic dose (2 × 105) of BALB/c PBMCs. The development of anti–H-2d antibody activities was measured by immunofluorescence flow cytometry. Broken line indicates the cutoff value for positive antibody detection.