Fig. 4

OSCC (location: anterior floor of the mouth): a CLE-Image: Completely unorganized tissue architecture (2p.); non-existent intercellular gaps (2p.); blurry, cloudy image because of indistinct cell borders (2p.); no increased fluorescein leakage (0p.); irregular vessels (coiled; see arrows) (1p.); b Micrograph (HE staining) of the corresponding specimen showing similar changes in vessel morphology (see arrows), cellular structure and tissue architecture