Staining cells: Methylene blue stains negatively charged cell components ... And it does this by, I believe, breaking down any pathogenic cell wall and donating an electron.

The cell wall of most bacteria has an overall net negative charge and thus can be stained directly with a single basic (positively charged) stain or dye. This type of stain allows us to observe the ...

Examples include methylene blue, basic fuchsin, and crystal violet. These dyes directly bind to and stain the negatively charged surface of bacterial cells. Negative, anionic, or acidic dyes: contain ...