Immunohistochemical Estimates of Angiogenesis, Proliferative Activity, p53 Expression, and Multiple Drug Resistance Have No Prognostic Impact in Osteosarcoma: A Comparative Clinicopathological Investigation

Figure 3

Histologic section of an osteosarcoma stained by a “cocktail” of antibodies against P-glycoprotein (MDR). In this case, the stain shows intense membranous accentuation with a sparse cytoplasmic reaction (MDR score = 3; original magnification 200X).