what is the purpose of a major histocompatibility complex (MHC)? What are the components of innate...

what is the purpose of a major histocompatibility complex (MHC)?

What are the components of innate and acquired immunity?

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Expert Solution

MHC molecules are very important in the immune system. They are involved in the display of processed antigens to B cells and T cells. MHC class I molecules display intracellular antigens to T cells; MHC class II molecules display extracellular antigens to B cells.

Innate immunity consists of cells and mechanisms already present ij body that fights infections in a broad general sense. The relevant components are: skin and mucous membrane (physical barriers); low pH in stomach (chemical barrier); neutrophils, macrophages, monocytes, eosinophils, natural killer cells (cellular responses) and complement dependant pathway.

Adaptive immunity consists of cells that mount a response extremely specific to the invading pathogen. There are two main mediators of adaptive immunity, both lymphocytes. First one is B lymphocytes which produces soluble antibodies against a pathogen in blood; the second one is the T lymphocyte which directly kills virus infected and cancer cells.

gladiator answered 1 year ago

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