Innate immune system cells

Vuong, C., Voyich, J. M., Fischer, E. R., Braughton, K. R., Whitney, A. R., DeLeo, F. R., and Otto, M. (2004) Polysaccharide intercellular adhesin (PIA) protects Staphylococcus epidermidis against major components of the human innate immune system. Cell. Microbiol. 6, 269-275. 

A cascade of proteins of the immune response that can be triggered by antigen-antibody complexes and by the innate immune system (e.g. exposure to microbial polysaccharides) to raise the immune response. Complement proteins can detect and bind to foreign material or immune complexes and label them for phagocytosis. They can also cause inflammation by directly degranulating mast cells and releasing chemokines to recruit other immune cells into the affected area. 

While cells of the innate immune system can combat invading microbes autonomously, their effector mechanisms are also used and greatly enforced by the... 

Pattern recognition receptors (PRRs) are receptors expressed by cells from the innate immune system... 

In contrast to adaptive immune function, fewer studies have examined effects of TCDD on the innate immune system. Furthermore, of the limited data available, much of it is inconsistent. For example, natural killer (NK) cell activity has been reported to be unaffected,80,93 diminished,94 and increased95 following exposure to TCDD. Although a thorough assessment of AhR expression in all innate cell lineages has not been conducted, neutrophils and macrophages express the AhR,8,96 and neutrophils are affected... 

As components of bacterial cell walls, LPS and lipids A are first recognized by the cells of the innate immune system and are able to activate them. 

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