Immune response-associated production of neopterin. Release from macrophages primarily under control of interferon-gamma. - Huber,C.; Batchelor,J.R.; Fuchs,D.; Hausen,A.; Lang,A.; Niederwieser,D.; Reibnegger,G.; Swetly,P.; Troppmair,J.; Wachter,H. (J Exp Med, 1984)