Antigen
A molecule that can be covalently linked to a non-immunogenic antigen to make it an immunogen is called a (n)

mitogen
carrier
adjuvant
hapten

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

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