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ringzhu
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[求助]
manipulative negative control
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prepare a manipulative negative control by filtering 100 mL of sterile 0.1 % peptone water. Include a non-manipulative negative control of a TSA pre-filled medium cassette. 這兩個(gè)句子里的manipulative negative control 和non-manipulative negative control是神馬陰性對(duì)照? |
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木蟲(chóng) (職業(yè)作家)
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