Diagrammatic representations of six isoenzyme band patterns of eight isolates of Acanthamoeba spp. (1-8), A. culbertsoni (Cu), A. healyi (He), A. royreba (Ro), A. castellanii (Ca), A. hatchetti (Ha) and A. polyphaga (Po). G-6-PD, glucose-6-phosphate dehydrogenase; MDH, malate dehydrogenase; LAP, leucine aminopeptidase; LDH, lactate dehydrogenase; ME, malic enzyme; HK, hexokinase.