A gram stain should be done to identify organisms.
革兰氏染色可用来检测细菌.
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No organisms were seen microscopically and cultures and Gram stain were negative.
在显微镜下没看到(微)生物,而且培养及革兰氏染色也呈阴性.
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英英释义
Noun
1. a staining technique used to classify bacteria; bacteria are stained with gentian violet and then treated with Gram's solution; after being decolorized with alcohol and treated with safranine and washed in water, those that retain the gentian violet are