AUTORES : Andersson E. Asselineau D. Chambon P Darmon M Martin B Reiniche P Shroot B Torma H Vahlquist A Biologic activities of retinoic acid and 3,4-didehydroretinoic acid in human keratinocytes are similar and correlate with receptor affinities and transactivation properties 1994 J Invest Dermatol 1994 ;102 (1):49-54 | Department of Dermatology, University Hospital, Linkoping, Sweden.