Table 2. SBA titers against S. flexneri 2a and 3a as determined by L-SBA and by CFU counts-based method.

	test 1	test 2	test 3	Average	SD	CV %
S. flex 2a
L-SBA titer	88662	94734	91261	91552	3046	3
R2	0.9819	0.9820	0.9957
CFU titer	82978	60520	83720	75739	13186	17
R2	0.9423	0.9703	0.9230
S. flex 3a
L-SBA titer	403554	345048	464769	404457	59866	15
R2	0.9954	0.9906	0.9974
CFU titer	382494	301295	320411	334733	42452	13
R2	0.9965	0.9923	0.9980