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Effect of a single percutaneous drainage puncture on abscess development. Abscesses were drained 6 days after inoculation with B. fragilis ATCC 23745 and E. coli ATCC 25922. Abscess weights and bacterial counts were determined immediately after drainage or 1, 2, or 3 days later and compared to those for undrained abscesses for which measurements were obtained on the same days. The means ± SEMs are given.
