Stx2 subtype,ng/ml,1st.,2nd.,3rd.,average,SD Stx2a,0,0,0,0,0,0 Stx2a,1,1.7,2.1,1.0,1.6,0.6 Stx2a,2,2.7,3.6,2.0,2.8,0.8 Stx2a,4,4.8,5.2,3.9,4.6,0.7 Stx2a,8,9.0,9.8,8.3,9.0,0.8 Stx2a,16,17.8,17.9,16.1,17.3,1.0 Stx2a,32,33.4,33.1,30.0,32.2,1.9 Stx2a,64,60.1,56.8,52.1,56.3,4.0 Stx2a,128,91.5,81.7,76.1,83.1,7.8 Stx2a,256,97.9,87.1,83.2,89.4,7.6 Stx2e,0,0,0,0,0,0 Stx2e,1,3.2,1.5,1,1.9,1.2 Stx2e,2,3.4,2.6,3.1,3.0,0.4 Stx2e,4,6.2,6.9,6.5,6.5,0.4 Stx2e,8,13.5,11.7,12.5,12.6,0.9 Stx2e,16,25,22.6,23.3,23.6,1.2 Stx2e,32,42.5,36.2,38.6,39.1,3.2 Stx2e,64,61.5,54.6,54.5,56.9,4.0 Stx2e,128,79.9,68.3,67.3,71.8,7.0 Stx2e,256,91.1,77.9,75.7,81.6,8.3