title: THE CRYPTOPORPHYRIN FORMED BY IRRADIATION OF PROTOPORPHYRIN.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D002845:Chromatography; D011166:Porphyrins; D011524:Protoporphyrins; D011830:Radiation Effects; D012106:Research; D013053:Spectrophotometry; D013057:Spectrum Analysis
chemical_list: D011166:Porphyrins; D011524:Protoporphyrins
keywords: CHEMISTRY; CHROMATOGRAPHY; EXPERIMENTAL LAB STUDY; PORPHYRINS; RADIATION EFFECTS; SPECTROPHOTOMETRY; SPECTRUM ANALYSIS