Successful in vivo blockade of CD25 (high-affinity interleukin 2 receptor) on T cells by administration of humanized anti-Tac antibody to patients with psoriasis. - Krueger,J.G.; Walters,I.B.; Miyazawa,M.; Gilleaudeau,P.; Hakimi,J.; Light,S.; Sherr,A.; Gottlieb,A.B. (J Am Acad Dermatol, 2000)