Figure 6

Resection of the cheek pouch 4 days after PDT at drug dose of 5 mg kg−1, light dose of 100 J cm−2, DLI=30 min. Left: Tul tumour irradiated with total necrosis level 4, Tu2 tumour not irradiated. Right: R, Reference irradiation on healthy tissue, level 2. The bar represents 10 mm.