求译Drug dilutions with 2- or 2.5-fold steps ranging from 10-4 to 10-7 MDrug dilutions with 2- or 2.5-fold steps ranging from 10-4 to 10-7 M were made in 1-ml volumes of broth

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求译Drugdilutionswith2-or2.5-foldstepsrangingfrom10-4to10-7MDrugdilutionswith2-or2.5-foldstepsrangingf

求译Drug dilutions with 2- or 2.5-fold steps ranging from 10-4 to 10-7 MDrug dilutions with 2- or 2.5-fold steps ranging from 10-4 to 10-7 M were made in 1-ml volumes of broth
求译Drug dilutions with 2- or 2.5-fold steps ranging from 10-4 to 10-7 M
Drug dilutions with 2- or 2.5-fold steps ranging from 10-4 to 10-7 M were made in 1-ml volumes of broth

求译Drug dilutions with 2- or 2.5-fold steps ranging from 10-4 to 10-7 MDrug dilutions with 2- or 2.5-fold steps ranging from 10-4 to 10-7 M were made in 1-ml volumes of broth
你抄的句子可能有误:
10-4 to 10-7 M
实际是
10的-4次方 到 10的-7次方 摩尔浓度
药物以broth液加倍或2.5倍逐步递增稀释到覆盖10的-4次方 到 10的-7次方 摩尔浓度,每个浓度1毫升体积.