Immune System
The time-course of an immune response begins with the initial pathogen encounter, (or initial vaccination) and leads to the formation and maintenance of active immunological memory.
The immune system is involved in many aspects of physiological regulation in the body.
The immune system interacts intimately with other systems, such as the endocrine[83][84] and the nervous[85][86][87] systems.
The immune system also plays a crucial role in embryogenesis (development of the embryo), as well as in tissue repair and regeneration.[88]