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DMBA contact hypersensitivity response in AKR, C57BL/6, and AKRxC57BL/6 F1 hybrid mice. Panels of mice that were sensitized to 100 μl ofDMBA and were ear-challenged with 20 μl of DMBA served as positive controls (solid bars). Panels of mice that were only ear-challenged with 20 μl of DMBA served as negative controls (shaded bars).
