“…In addition there have been a number of papers on the serological diagnosis of amoebiasis, using complement-fixation (Izar, 1914;Craig, 1939;Kenney, 1952;Kasliwal, Kenney, Gupta, Sethi, Tatz, and Illes, 1966), indirect haemagglutination (Kessel, Lewis, Pasquel, and Turner, 1965), gel-diffusion precipitin (Maddison, 1965;Powell, Maddison, Wilmot, and Elsdon-Dew, 1965), and immunofluorescence techniques (Jeanes, 1964(Jeanes, , 1966.…”