Maintenance of Immune Homeostasis. (A) When inflammatory cues (i.e., effector cells, mature dendritic cells, inflammatory cytokines) are balanced by anti-inflammatory cues (i.e., regulatory T cells, immature dendritic cells, anti-inflammatory cytokines, etc.), the immune system is in a state of immunological equilibrium. (B) If there is a greater ratio of anti-inflammatory to inflammatory signals, diseases such as cancer can develop and propagate. (C) If there is a greater ratio of inflammatory to anti-inflammatory signals, conditions such as autoimmune diseases and transplant rejection can develop and propagate.