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?

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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