Components of the immune system
From Wikiversity
The immune system includes the innate (nonspecific) and the adaptive (specific) immune systems. These are further divided into humoral and cellular components.
The humoral components of the innate system include the complement system, the coagulation system and cytokines. The cellular components include neutrophils, macrophages, monocytes, NK (natural killer) cells, eosinophils. Besides these there is the anatomical barrier that includes mechanical factors, chemical factors, biological factors.