To determine if the type of toxin produced by B. cereus isolated
from ricewas affected by production area, toxin gene patterns were
further examined. Table 8 shows toxigenic gene patterns of
B. cereus isolated from rice samples. We classified B. cereus isolates
into five toxin gene patterns according to the presence of all three
hblC, hblD, and hblA genes (hblCDA), all three nheA, nheB, and nheC
genes (nheABC), and the ces gene. Table 9