Accepts electrons from cytochrome c, ultimately transferring them to oxygen, forming H2O. in the process, 2 protons are pumped across the membrane. Complex IV is a terminal oxidoreductase, meaning that it transferes the elctrons to the terminal electron acceptor, which, in this case, is O2.
White blood cells called lymphocytes originate in the bone marrow but migrate to parts of the lymphatic system such as the lymph nodes, spleen, and thymus. There are two main types of lymphatic cells, T cells and B cells.
lymph node (-) -> +++ inducible Kupffer cells liver Phagocytes (monocyte/ macrophage) + microglia brain non-phagocytic constitutive antigen presenting cells-Langerhans' cells Interdigitating dendritic cells Follicular dendritic cells skin lymphoid tissue lymphoid tissue ++ constitutive lymphocytes-B cells and T cells Lymphoid tissue, site of immune reaction (-) -> +++ inducible