The new generation conjugate vaccines contain carrier proteins that are chemically attached to the polysaccharide antigens. Attaching relatively non-immunogenic polysaccharides to the highly immunogenic carrier proteins means that by activating a T-cell response, conjugate vaccines induce both high-affinity antibodies against the polysaccharide, and immune memory.
So in conclusion:
Polysaccharide vaccine - T cell independent B cell response
Conjugate vaccine - Carrier proteins - T cell dependent B cell response
CT (Like a CT scan?)
ConjugaTe has a T cell response