"Artificial intelligence"
innate immune system
Encounters with most external microorganisms such as bacteria do not essentially result in disease. Apart from cases where there is a wound, the skin and the internal mucosal surfaces form an initial barrier to all infections.
chemical barriers like low pH, hydrolytic enzymes and antibacterial defence mechanisms are activated. In addition nature also provides its own defence mechanism. The body is covered with micro flora that also compete with the pathogens for space and nutrients forming another external line of defence. These mechanisms commence action immediately on the entry of a pathogen and regardless of prior exposure to them. Such reactions are commonplace and uniform for all individuals.
The pathogen may still be stubborn and penetrate the skin and cause a local infection. The damaged tissue at the site of infection and the antigenic particles of the pathogen signal a set of macrophages to secrete chemotactic cytokines to attract more phagocytes They also facilitate more fluid and cells to enter tissues at the site of infection. The neutrophil 15 and macrophages then destroy the pathogens. Phagocytes comprise of macrophages and neutrophils possess the capability of devouring and digesting a range of microorganisms and other antigenic particles. This process is known as phagocytosis.
An assisting Compliment system is activated on the surface of the pathogens to Promote phagocytosis and pathogen
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