B cells make antibodies whose job it is to prevent you from getting infected with a germ. By killing off infected cells, they prevent you from getting sicker. You also have something called helper T cells, known as CD4s, which help B cells to make antibodies and CD8s to kill germs that invade your body. So even if your first line of defence doesn’t succeed in fully protecting you, these killer cells come in and fire directly at the already infected cells, helping you keep the illness at bay. Also, part of the body’s immunity has antibodies helping T-cells to kill infected cells.

Source: News 24 December 20, 2021 16:37 UTC