Figure 2

Immunohistochemical analysis of HIV-associated lung tumor tissue samples (squamous cell carcinoma (A,C) and invasive adenocarcinoma (B,D) stained with anti-TFAP2A (A,B) and anti-SIX1 antibodies (C,D) (original magnification ×400). The normal adjacent lung tissue was labelled with yellow arrows or tumor with red arrows.