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

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

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Antigen
CD antigens

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

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Antigen
During the lag period between antigen contact and detection of adaptive immunity,

innate immunity blocks the activation of adaptive immune effector cells
antigen is hidden from the immune system in macrophages
innate immune effectors are eliminating antigen
new B and T cells with the appropriate antigen specificity must be produced in the bone marrow

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