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Photomicrographs of heart sections from the different experimental groups stained with VEGF-ir. Faint positive reactions for VEGF expression in the (A) control and (B) costus groups. (C) EST group shows moderate to severe positive reactions (arrows) for VEGF expression. (D) EST group treated with costus shows moderate reactions (arrows) for VEGF expression. VEGF-ir, vascular endothelial growth factor immunoreactivity; EST, Ehrlich solid tumor.
