Figure 9
From: Photosensitization of a subcutaneous tumour by the natural anthraquinone parietin and blue light

Control tumours treated with PTN or light alone. Tumours treated twice with PTN and non-illuminated (PTN-Tumour) or illuminated twice previous application of vehicle (Light-Tumour); mice were sacrificed and tissues excised 24 h after the last dose. Sections were photographed using the × 4 objective.