title: Photometric studies on Xylidine Ponceau-collagen interaction.
mesh_terms: D001391:Azo Compounds / Q000032:analysis*; D055598:Chemical Phenomena; D002621:Chemistry; D003094:Collagen / Q000032:analysis*; D004396:Coloring Agents / Q000032:analysis*; D009282:Naphthalenesulfonates / Q000032:analysis*; D013053:Spectrophotometry / Q000379:methods
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; D009282:Naphthalenesulfonates; D003094:Collagen; C015476:ponceau MX