was required to show any decided bactericidal action. Crystal violet showed about the same selective and bactericidal action as gentian violet. 3. Methylene blue as made up for staining showed little ...

Methylene blue is a synthetic dye and medication used for a variety of purposes, including treating blood conditions, ...

Cover the smear with carbolfuchsin dye. Carbolfuchsin a potential carcinogen. Please wear gloves and work with the stain in the hood. Place a piece of paper towel on top of the dye. Be sure the paper ...

This type of stain allows us to observe the shape, size and arrangement of bacteria. 1. Use the smear prepared in the previous procedure. Staining is done at the sink. 2. Add several drops of ...