S.H. FLINT, N.J. HARTLEY, S.M. AVERY AND J.A. HUDSON. 1996. Forty‐sevenListeria monocytogenesisolates were analysed using multilocus enzyme electrophoresis in two laboratories. Both assayed for the same six enzymes, but one used a starch gel method and the other polyacrylamide gels. The starch gel method distinguished six electrophoretic types whereas the polyacrylamide gel method produced 17 different electrophoretic types. The polyacrylamide gel method was more discriminatory than the starch gel metho