Jan 14, 2021 · Gram staining is a common technique used to differentiate two large groups of bacteria based on their different cell wall constituents
Aug 31, 2021 · Stain definition: A stain is a mark on something that is difficult to remove
Meaning to color (fabric, wood, etc
See here, the meanings of the word stain, as video and text
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’’ ‘His Academy uniform is as stiff and properly worn as any Ive seen, but the material is stained and patched
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Latex will not adhere properly over a surface that was previously coated with an oil stain, though you can put an oil stain over a latex stain