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focal melanotic macule macule. Benign. Dark spot on labia (or lip). Analogous to lentigo simplex. Hyperpigmented basal keratinocytes & dermal melanophages. Slight ⬆️ in single basal melanocytes; NO nests. More info like this in Differential Diagnosis of Pigmented Lesions
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Zhang R, Kang R, Tang D

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Three enzymes catalyze the movement of compounds in transverse diffusion (Figure 11)

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