“…Although other melanosomal proteins have been investigated in LAM cells, the results appear more variable for proteins such as tyrosinase and tyrosinase-associated protein. 39,40 In addition, antimelanosomal-specifi c antibodies, or PNL2, 26 react with a large number of LAM lung nodules. However, LAM cells are more defi nitively identifi ed for their reactivity to HMB-45 and now a PEP13h.…”