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Percentage of peritoneal B1a B-lymphocytes that express IgA in response to ex vivo asbestos exposure. Peritoneal cells were incubated with asbestos (at 50 μg/well) overnight, and then stained with antibodies to IgM, CD5, and IgA for flow cytometry. n = 4 mice per group; Treatment with asbestos significantly increased the expression of IgA; *p < 0.05.
