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Adaptive Immunity 4

Chose one:

CD4 is expressed on lymphocytes to:

Serve as a co-receptor on T-cells to help bind MHC class I

Serve as a co-receptor on T-cells to help bind MHC class II

Serve as a co-receptor on T-cells to help bind CD80/CD86 on antigen presenting cells

Promote attachment of T-cells to integrins on antigen presenting cells