How does the thymus help the body avoid autoimmune responses? (A) By negatively selecting T cells with receptors that bind to peptide-MHC complexes with high affinity. (B) By positively selecting T cells with receptors that only recognize self peptides. (C) By facilitating cell signaling between T cell surface receptors and antigens in the thymic capsule. (D) By using clonal deletion to eliminate antigen-presenting cells that have low affinity for T cells receptors. 2. Functions of the innate immune system include all of these EXCEPT: (A) to eliminate pathogens directly. (B) to mediate the inflammatory response. (C) to activate the adaptive immune system. (D) All of these are functions of the innate immune system.
1. How does the thymus help the body avoid autoimmune responses?
(A) By negatively selecting T cells with receptors that bind to peptide-MHC complexes with high affinity.
(B) By positively selecting T cells with receptors that only recognize self peptides.
(C) By facilitating cell signaling between T cell surface receptors and antigens in the thymic capsule.
(D) By using clonal deletion to eliminate antigen-presenting cells that have low affinity for T cells receptors.
2. Functions of the innate immune system include all of these EXCEPT:
(A) to eliminate pathogens directly.
(B) to mediate the inflammatory response.
(C) to activate the adaptive immune system.
(D) All of these are functions of the innate immune system.
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