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Positive control and negative control Positive control: Select the control strain based on the characteristics of the test sample (such as Staphylococcus aureus, Escherichia coli, etc.), with an inoculation amount of less than 100CFU
Something old, something new: ion channel blockers as potential anti-tuberculosis agents
USP guidance describes a 28-day beyond-use date for multi-dose vials after first puncture, assuming aseptic technique on every draw
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