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Figure 4: Photomicrograph showing a distinct basement membrane in oral lichen planus under light microscopy using H and E stain (a), PAS stain (b), and fluorescent microscopy acriflavine stain (c). (×40)

Figure 4: Photomicrograph showing a distinct basement membrane in oral lichen planus under light microscopy using H and E stain (a), PAS stain (b), and fluorescent microscopy acriflavine stain (c). (×40)