Fig. 5From: Profile of apoptotic proteins in oral squamous cell carcinoma: A cluster analysis of 171 casesTUNEL analysis in oral squamous cell carcinoma samples. a and b Apoptosis in squamous cell carcinoma keratinizing areas. TUNEL-positive cells in areas of keratin pearls: evidence of chromatin fragmentation (arrows) (original magnification X600)Back to article page