What is methylene blue? Methylene blue, considered the first fully synthetic drug used in medicine, was originally developed as a textile dye.

This is the metadata section. Skip to content viewer section. The study of the antiseptic action of the various dyes in the foregoing experiments warrants the following statements: 1. Aqueous ...

Direct, cationic, basic or positive dyes: contain positively charged groups. Examples include methylene blue, basic fuchsin, and crystal violet. These dyes directly bind to and stain the negatively ...