Ultrastructural Changes Induced by Ultraviolet Light in Human Epidermis: Basal and Spinous Layers.


Cytoplasmic alterations in human epidermis irradiated with ultraviolet light have been described by light microscopy (1, 2). Pronounced changes occurred in cells of the basal and spinous layers at the peak of the erythema reaction (twenty-four to thirty hours after irradiation). At this time, cells in the spinous layer developed homogeneous, deeply staining… (More)


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