The cell infiltrate in lymphomatoid papulosis comprises a mixture of polyclonal large atypical cells (CD30-positive) and smaller monoclonal T cells (CD30-negative). - Gellrich,S.; Wernicke,M.; Wilks,A.; Lukowsky,A.; Muche,J.M.; Jasch,K.C.; Audring,H.; Mason,D.; Sterry,W. (J Invest Dermatol, 2004)