FIGURE 1
From: Melanoma Growth Stimulatory Activity in Primary Malignant Melanoma: Prognostic Significance
Strong (3+) diffuse (>50%) melanoma growth stimulatory activity (MGSA/GRO-α) expression in the junctional component of a compound melanocytic nevus as compared with the weaker (1–2+) expression in the dermal component. Histiocytes are 3+ immunoreactive; magnification, 40×.
