Histological aspects of the skin from different groups and subgroups.

<p><b>A. </b><b><i>Group 1</i></b>, UV non-protected regions 1. Intracellular edema and scattered inflammatory cells. HE, bar = 100 µm; <b>B</b> and <b>C. </b><b><i>Group 2</i></b>, UV non-protected regions; intracellular edema, perivascular edema and mononuclear inflammatory cells, dermal fibrosis. HE, bar = 100 µm; <b>D</b> and <b>E. </b><b><i>Group 3</i></b><b>,</b> UV non-protected regions. Intracellular edema, dermal fibrosis and mineralization of collagen fibers; HE, bar = 200 µm; multiple foci of epidermal necrosis. HE, bar = 100 µm; <b>F</b> and <b>G. </b><b><i>Group 4</i></b>, UV non-protected regions. F - Diffuse intracellular edema of epidermis and multiple apoptotic cells. HE, bar = 100 µm; G - Dermal fibrosis and perivascular mononuclear cell aggregation. HE, bar = 100 µm; <b>H. </b><b><i>Group 4</i></b><b>,</b> UV protected regions. Hyperkeratosis, epidermal atrophy and uniform dermal fibrosis. HE, bar = 100 µm.