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Message: <blockquote data-quote="Quickstatus" data-source="post: 2318997" data-attributes="member: 49035">For those interested in studies looking at not just level of covid antibody levels but immune memory B and T cells as a marker of true immunity from Covid look <a href="https://www.science.org/doi/10.1126/science.abm0829" target="_blank">here</a>Memory B and T cells, binding antibody, neutralising antibody, Spike protein, receptor binding domains RBD are all mentioned...Here is a picture for those who cant read a dry scientific article:Basically after exposure to vaccine or wild infection the body starts making antibodies but also start making memory B and T cells. The initial period to make antibodies take 14 days or do - the long "inductive period.but when a second exposure comes along, the memory B andT cells jump into action and produces antibody and killer T cells within a few days - typically 3-5 days and the antibody levels produces can be many times higher than the initial peak antibody level[ATTACH]266196[/ATTACH]</blockquote>