When used in the context of vaccination, a titer is the concentration of an [[antibody]] typically produced by the body in response to the introduction of an [[antigen]] through vaccination. The higher the titer, the more antibodies that are present. | When used in the context of vaccination, a titer is the concentration of an [[antibody]] typically produced by the body in response to the introduction of an [[antigen]] through vaccination. The higher the titer, the more antibodies that are present. |