title: Red fluorescence of comedones: production of porphyrins by Corynebacterium acnes.
mesh_terms: D000152:Acne Vulgaris / Q000382:microbiology*; D002845:Chromatography; D003352:Corynebacterium / Q000032:analysis / Q000378:metabolism*; D005453:Fluorescence; D005470:Fluorometry; D006801:Humans; D008856:Microscopy, Fluorescence; D011166:Porphyrins / Q000096:biosynthesis*
chemical_list: D011166:Porphyrins