Immune Response in biochemistry
Polysaccharides on the surface of infecting microorganisms can also activate complement directly in the absence of

antibody via metabolic pathway
antibody via the alternative pathway
None of these
antigen via the alternative pathway

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Immune Response in biochemistry
Immunogenicity

is not a property of antibodies
depends on the ability of the native antigen to be presented by MHC
is not a property of haptens
is usually a property of self antigens such as eye tissue

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