Antigen
A virus vaccine that can activate cytotoxic T cells must contain

virus peptides
a high dose of virus particles
an adjuvant to stimulate T cell division
live virus

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Antigen
CD antigens

allow leukocytes to recognize antigen
are each expressed on only one cell type
are expressed on immune cells to mark them for separation
function as receptors for cytokine and CAMs

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Antigen
For specific antigen recognition by T cells,

denaturation of antigen does not reduce epitope recognition
MHC molecules are not required
antigen exposure during T cell maturation is required
antigen is bound by a T cell membrane antibody

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