Both the number
of neoplasms per animal and the incidence of neoplasia
FIG. 2. Survival of E. coli O157:H7 in soy sauce; incubated at 30°C, 18°C and 4°C. Symbols: closed squares, sample i (koikuchi); closed
circles, sample ii (koikuchi, semichemical soy sauce and contained preservatives); closed triangles, sample iii (usukuchi, light-colored); closed
rhombuses, sample iv (low-salt soy sauce); open circles, control. Control: 0.1 M phosphate-buffered saline (pH 7.0). Adopted from Ref. 15.