Toluidine blue stain

Toluidine blue is a basic thiazine metachromatic dye with high affinity for acidic tissue components. Toluidine blue is a basic thiazine metachromatic dye with high affinity for acidic tissue components. It stains nucleic acids blue and polysaccharides purple and also increases the sharpness of histology slide images. It is especially useful today for staining chromosomes in plant or animal tissues, as a replacement for Aceto-orcein stain. Results The results depend on the studied organs: