Immune System
Major Histo Compatibility Complex (MHC) is a collection of genes arrayed on

chromosome 21 in man, chromosome 6 in mice
chromosome 6 in man, chromosome 17 in mice
chromosome 17in man, chromosome 6 in mice
chromosome 6 in man, chromosone 21 in mice

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Immune System
Which of the following is correct for CD8 T cells?

CD8 T cells can kill individual virus-infected cells in a contact dependent fashion
In the thymus, CD8 T cells undergo positive selection only, whereas CD4 T cells undergo negative selection only
CD8 T cell receptor recognizes epitopes that are also commonly recognized by B cells
CD8 T cells only recognize virus-infected cells

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