Saffron is used in a variety of histological staining methods including the Hematoxylin, Phloxine and Saffron (HPS) staining technique.
The HPS stain demonstrates collagen in connective tissues. Hematoxylin, stains acidic structures such as DNA, purple. Phloxine, stains most proteins pink and Saffron stains collagen yellow.
Synonyms: Crocin, Gram Stain