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5. What is the role of major histocompatibility complex (MHC) proteins in autoimmune diseases?
a. MHC proteins prevent autoimmune reactions by suppressing the immune system.
b. MHC proteins present self-antigens to immune cells.
c. MHC proteins regulate the production of antibodies against foreign pathogens, preventing autoimmune responses.
d. MHC proteins promote the differentiation of regulatory T cells, which suppress autoimmune reactions.

Sagot :

Answer:

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Explanation:

b. MHC proteins present self-antigens to immune cells.

Major histocompatibility complex (MHC) proteins play an important role in the immune system by presenting antigens, including self-antigens, to immune cells. In the context of autoimmune diseases, MHC proteins can present self-antigens to T cells, which can mistakenly recognize these self-antigens as foreign and initiate an immune response against the body's own tissues. This inappropriate immune response can lead to the development of autoimmune diseases.

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