Blymphocyte Coloured Scanning Electron Microgr aph of a group of Blymphocyte white blood cells The cell surfaces are covered with tiny ridges and projections called microvilli which help it bind to target proteins Bcells account for of the bodys lymphocytes On encountering a foreign antigen such as a bacterial surface protein the immature Bcell either divides into a number of plasma cells which produce antibodies that kill the invader or it matures into a memory cell Memory cells remain in the body for years giving immunity to the original pathogen Magnification x at xcm size
