Fuchsine

By other experiments a much finer subdivision can be made. A solution of .00000002ᵍ of the red coloring matter, fuchsine, in 1ᶜᶜ of alcohol gives a distinct color.

Acid members of this class include acid violets, soluble and alkali blues, wool blues, Acid Magenta which is the same as Acid Fuchsine, acid greens, patent blues, ketone blues, Neptune Green, Erioglaucine, and others.

When skin is stained with Altmann’s acid fuchsin methyl green the spiral filaments of the epidermis are stained only moderately, but typical mitochondria stain clearly.