Tryptamine and dimethyltryptamine inhibit indoleamine 2,3 dioxygenase and increase the tumor-reactive effect of peripheral blood mononuclear cells - Tourino, Melissa Cavalheiro; Oliveira, Edson Mendes de; Bellé, Luziane Potrich; Knebel, Franciele Hinterholz; Albuquerque, Renata Chaves; Dörr, Felipe Augusto; Okada, Sabrina Sayori; Migliorini, Silene; Soares, Irene da Silva; Campa, Ana (Cell Biochemistry and Function, 2013)