title: Indoleamine 2,3-dioxygenase and regulatory function: tryptophan starvation and beyond.
authors.affiliation: Department of Experimental Medicine and Biochemical Sciences, University of Perugia, Perugia, Italy.
authors.forename: Ciriana
authors.initials: C
authors.lastname: Orabona
authors.forename: Ursula
authors.initials: U
authors.lastname: Grohmann