Polysaccharides-Lipids
& Haptenes
Types of antigens: - continued
2.Polysaccharides
and Lipids
˜are not
recognized by T cells
˜can not
induce cell-mediated immune responses
˜humoral
immune response may be induced
&mainly
IgM produced
&short-lived
immunity
3.Hapten-Carrier
complex
˜haptens are
low molecular weight antigens
˜haptens
incapable of inducing an immune response by themselves
˜haptens when
bound to a larger molecule (carrier molecule) forms a complex that is immunogenic.
˜humoral
immune response is induced with Ab=s produced against the hapten alone/carrier
alone/or the complex.
