Administration of a CD25-Directed Immunotoxin, LMB-2, to patients with metastatic melanoma induces a selective partial reduction in regulatory T cells in vivo - Powell Jr, Daniel J; Felipe-Silva, Aloisio; Merino, Maria J; Ahmadzadeh, Mojgan; Allen, Tamika; Levy, Catherine; White, Donald E; Mavroukakis, Sharon; Kreitman, Robert J; Rosenberg, Steven A; Pastan, Ira (Journal of Immunology, 2007)