In Vivo Noninvasive Imaging of Healthy Lower Lip Mucosa: A Correlation Study between High-Definition Optical Coherence Tomography, Reflectance Confocal Microscopy, and Histology

Figure 5

Conventional histology image under light microscopy showing the uppermost epithelial layers. Green arrow: non-keratinized area pinpointing abscence of nuclei. Yellow arrows: parakeratinized areas with presence of nuclei in the uppermost epithelial layer. Red arrows: flat nuclei in upper epithelial layers. Blue arrows: large filament content of cytoplasm giving appearance of microfolds.