Localization of tumour necrosis factor-alpha (TNF-alpha) and its receptors in normal and psoriatic skin: epidermal cells express the 55-kD but not the 75-kD TNF receptor.
The distribution of TNF-alpha, p55 TNF receptor (TNF-R) and p75 TNF-R in normal skin and uninvolved and lesional skin from psoriasis patients has been investigated, using specific mono- and polyclonal antibodies. In normal skin, and uninvolved and lesional skin from psoriasis patients, p55 TNF-R is associated with epidermal keratinocytes and a network of upper dermal dendritic cells. This suggests that the actions of TNF-alpha on epidermal cells in vivo are mediated by binding to the p55 TNF-...Expand abstract
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