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Immunohistochemistry (IHC) · Dermatology
Microphthalmia (MiTF) is a transcription factor implicated in pigmentation, bone development, and in mast cells. Various forms of MiTF exist ranging from 50 -70 kD in size. This antibody targets the 52 - 56 kD range and has been useful in identifying malignant melanoma and distinguishing mast cell lesions from lesions of myeloid derivation. A relatively rare class of tumors known as PEComas (tumors showing perivascular epithelioid cell differentiation) express MiTF in a high percentage of cases (~90%).