Polysaccharide antigens are:
Ans. (a)For proteins and erythrocytes - T cell dependent antigens.For polysaccharides - T cell independent antigens.Protein antigens eliminated in days to weeks whereas polysaccharide antigens persist for months to years e.g., pneumococcal polysaccharide may persist upto 20 years in humans following a single injection.
T cell independent antigens
T cell dependent antigens
MHC I dependent antigens
MHC II dependent antigens
Immunology