Scientists see signs of lasting immunity to COVID-19, even after mild infections – Chicago Tribune

In discussions about immune reactions to the coronavirus, much of the discussion has actually focused on antibodies– Y-shaped proteins that can latch onto the surfaces of pathogens and obstruct them from infecting cells. But antibodies represent simply one wing of a complex and coordinated squadron of immune soldiers, each with its own special modes of attack. Infections that have already gotten into cells, for circumstances, are masked from antibodies, but are still susceptible to killer T cells, which force infected cells to self-destruct. Another set of T cells, nicknamed “assistants,” can coax B cells to mature into antibody-making devices.