The immune system. of humans and other vertebrates is made up of two components known as the innate immune system and the adaptive or acquired immune system (1,2)
The innate immune system includes barriers that protect the body from invasion by potentially pathogenic organisms and by various cell types, including phagocytic cells, antigen-presenting cells, and NY cells.
The adaptive or acquired immune system is composed of B and T lymphocytes, responsible for the production of antibodies (humoral immunity) and cellular immunity, respectively (1). The function of innate responses is to act as a first line of defense, neutralizing invading organisms while producing cytokines, substances that stimulate B and T lymphocytes (1,3).