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Host responses to E22 infection in vivo. (A and B) Volume-to-length ratios, an indicator of the amount of fluid secreted into the intestinal lumen, using zidovudine (A) and ciprofloxacin (B) as SOS inducers. (C and D) Interleukin-8 (IL-8) levels in the loop fluids were measured using an EIA for rabbit IL-8, again using zidovudine (C) and ciprofloxacin (D) as inducers of the SOS response. HBS, HEPES-buffered saline.
