Longevity enthusiasts are buzzing after reports surfaced that Robert F. Kennedy Jr. may be a fan of methylene blue. President Donald Trump’s pick to lead the Department of Health and Human ...

methylene blue, to track freezing in open cylindrical glass containers. The dye easily dissolves in water and turns it blue. The dye becomes transparent when the water freezes, as it gets pushed out ...

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 ...