Chronic immune activation in HIV-1 infection contributes to reduced interferon alpha production via enhanced CD40:CD40 ligand interaction. oleh Norbert Donhauser, Kathrin Pritschet, Martin Helm, Thomas Harrer, Philipp Schuster, Moritz Ries, Georg Bischof, Jörg Vollmer, Sigrun Smola, Barbara Schmidt, German Competence Network HIV/AIDS