Complement-opsonized HIV-1 alters cross talk between dendritic cells and natural killer (NK) cells to inhibit NK killing and to upregulate PD-1, CXCR3, and CCR4 on T cells by Ellegard, Rada, Khalid, Mohammad, Svanberg, Cecilia, Holgersson, Hanna, Thorén, Ylva, Wittgren, Mirja Karolina, Hinkula, Jorma, Nyström, Sofia, Shankar, Esaki Muthu, Larsson, Marie