Immunity and infection

The immune system is composed of specialized effector cells responsible for identifying and reacting to foreign stimuli. This defensive barrier is activated when infectious agents manage to surpass the first physical barrier, made up of the skin and mucous membranes. Once pathogens have entered the body, the immune system detects their presence and triggers a rapid and coordinated response to combat the infection.

Within this immune response, various molecules and cells work together to suppress and eliminate the infection. The immune system also utilizes antibodies and cytokines, which help neutralize invaders and coordinate the inflammatory response. Together, these actions form a highly effective defense system that protects the organism against infections and promotes recovery.

This section includes the molecules involved in the activation of immune processes.