Antigen
Which of the following is incorrect with regard to antigen epitopes?

Epitopes may be linear or assembled
A protein molecule usually contains multiple epitopes
B cells bind only processed antigen epitopes
An epitope may be shared by two different antigens

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Antigen
For specific antigen recognition by T cells,

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

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Antigen
CD antigens

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

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