<prompt> Atypical lymphoid cells in infectious moninucleosis -MonocytesCD lymphocytesKiller T cellsLymphoblasts  <response>: Cd8 t cells bring about killing of B cells and are pathognomonic atypical lymphocytes seen in blood in infectious mononucleosis. Reference textbook of Pathology 7th edition author Harsha Mohan page number 330. 