Figure 4
From: Antitumor activity of photodynamic therapy performed with nanospheres containing zinc-phthalocyanine
Ehrlich tumor histopathology after photodynamic therapy and doxorubicin treatment. Sections refer to: (A) control tumor, (B) albumin-ZnPc treated tumors, and (C) doxorubicin treated tumor presenting central area of tumor necrosis (N) and viable cells in the tumor periphery (V). Section (D) represents the tumor treated with PDT, showing the necrotic tissue in the central and peripheral areas of the tumor.