Gudjonsson J, Johnston A, Dyson M, Valdimarsson H, Elder J. Mouse models of psoriasis. The Journal of investigative dermatology 127 (6) , 1292-308 (2007) (Epub 12 Apr 2007) PubMed ID:(17429444 )

Johnston A, Gudjonsson J, Sigmundsdottir H, Ludviksson B, Valdimarsson H. The anti-inflammatory action of methotrexate is not mediated by lymphocyte apoptosis, but by the suppression of activation and adhesion molecules. Clinical immunology (Orlando, Fla.) 114 (2) , 154-63 (2005) PubMed ID:(15639649)

Sigmundsdottir H, Johnston A, Gudjonsson J, Valdimarsson H. Narrowband-UVB irradiation decreases the production of pro-inflammatory cytokines by stimulated T cells. Archives of dermatological research 297 (1) , 39-42 (2005) (Epub 12 May 2005) PubMed ID:(15889264)

Gudjonsson J, Johnston A, Sigmundsdottir H, Valdimarsson H. Immunopathogenic mechanisms in psoriasis. Clinical and experimental immunology 135 (1) , 1-8 (2004) PubMed ID:(14678257 )

Johnston A, Gudjonsson J, Sigmundsdottir H, Love T, Valdimarsson H. Peripheral blood T cell responses to keratin peptides that share sequences with streptococcal M proteins are largely restricted to skin-homing CD8(+) T cells. Clinical and experimental immunology 138 (1) , 83-93 (2004) PubMed ID:(15373909 )