What does the human immune system include?
Disease description:
Hello doctor, I'd like to learn about what the human immune system includes. Recently I've become fascinated with a TV drama about forensic science, which mentioned the human immune system, so I've become curious and would like to learn more.
Doctor's answer (1)
Dr. Liu Aihua
The human immune system consists of three major components: innate immunity, antibody-mediated immunity, and passive immunity. Innate immunity utilizes the body's inherent defenses to resist external pathogens. Key immune cells and mechanisms involved include exudative cells, cell-mediated immune responses, active toxin-mediated reactions, and reactions mediated by radionuclides and signaling proteins. Antibody-mediated immunity refers to immune responses that use antibodies produced within the body to defend against external pathogens, including antigen-antibody reactions, co-cellular antibody reactions, and autoantibody reactions. Passive immunity involves generating immune responses through the introduction of exogenous antibodies, such as those from transplants or serum, and primarily includes transplant-derived antibody reactions and serum-based antibody reactions. The primary function of the immune system is to protect the body from infectious diseases caused by external pathogens.
