A number of flasks containing a nutrient medium were each inoculated with one drop of this mixture; it was found that some remained sterile, and Lister assumed that the remaining flasks each contained a pure culture. [Please select]
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Be sure and don't forget your flasks in the morning. [Please select]
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At first beakers, flasks and bowls flew back and forth. [Please select]
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Two flasks; and that's more than we shall drink ourselves. [Please select]
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"Perhaps bullet molds and powder flasks may have damaged it." [Please select]
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I forgot--the flasks and sandwiches--are they ready, and the worms. [Please select]
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