Expression of granulocyte CD11a epitopes in blood versus skin blisters. Representative LFA-1/Mac-1 dot plots for neutrophils in blood (A) and 16-hour blister fluid (C), using mAbs 38:FITC and ICRF44:PE, respectively. Representative histogram overlays for CD11a epitopes 38 and G25.2 expressed by neutrophils in blood (B) and 16-hour blisters (D).