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Residual lipophilic minor histocompatibility antigens in BP following antigen removal using chaotropes. Urea and thiourea decrease lipophilic antigenicity of BP (A). Representative Western blot of lipophilic BP-specific antigens following addition of chaotropes (B). Results plotted as mean ± standard deviation (n = 6 per group). Groups not connected by same letter are significantly different (p < 0.05). BP, bovine pericardium.
