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The efficacy of the 50-ml vacutainer culture tube (Becton-Dickinson) for recovery of microorganisms from blood cultures was compared with laboratory-prepared blood culture media. The isolation of Bacteroides sp. was significantly higher in the 50-ml vacutainer culture tube whereas that of nonfermenting gram-negative rods and yeasts was higher in the in-house media. There was no significant difference in the recovery of all other organisms.
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Painter et al. (1975) studied this question.
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