title: On the phosphorescence of collagen.
mesh_terms: D000818:Animals; D002417:Cattle; D003080:Cold Temperature; D003094:Collagen; D004578:Electron Spin Resonance Spectroscopy; D008163:Luminescent Measurements; D010649:Phenylalanine; D013997:Time Factors; D014443:Tyrosine; D014466:Ultraviolet Rays
chemical_list: D014443:Tyrosine; D010649:Phenylalanine; D003094:Collagen