Patients typically present with painful, swollen abdomens (with or without bloody diarrhea and vomiting). Symptoms develop 12 hr to several days following the consumption of contaminated foods, and patients may show toxemia in severe cases. On surgical examination, the patient is typically found to have segmental necrotizing enteritis of the proximal intestine. No current assays exist for rapid diagnosis of the disease, and culture diagnosis typically requires samples from the site of infection, along with in vitro toxin assays. The multiplex PCR typing assay could be a helpful, rapid diagnostic test for distinguishing between normal flora type A isolates and type C isolates not normally present in significant numbers in the intestinal flora.
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The use of dumbbells gives you a much more comprehensive strengthening effect because the workout engages your stabilizer muscles, in addition to the muscle you may be pin-pointing. Without all of the belts and artificial stabilizers of a machine, you also engage your core muscles, which are your body's natural stabilizers.