<prompt> HMB 45 is a marker for-SarcomaMelanomaCarcinomaNone of the above  <response>: Harshmohan textbook of pathology 7th edition. HBM45 is the most specific immunohistochemical stain for melanoma. Sarcomas- immunohistochemical stains like vimentin, desmin. carcinoma- pankeratine.. 