ing. The symptoms are milder than those teristics. For example, lactose-positive cul- caused by Salmonella. Detection of this tures have been found, and nonmotile species organism is by anaerobic cultivation of food exist, such as S. pullorum and S. gallinarum. using differential anaerobic agar, such as The organism is heat sensitive but can toler- tryptose sulfite cycloserine agar. C. perfrin- ate a variety of chemicals, such as brilliant gens forms black colonies in this agar green, sodium lauryl sulfite, selenite, and medium. Immunologic methods such as tetrathionate. These compounds have been reverse-passive agglutination assay and used for the selective isolation of this organ- ELISA test have been developed to detect the ism from food and water. To confirm the CPE in food, culture fluid, and feces
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