title: An optical absorption change that could be due to reduction of the primary photochemical electron acceptor in photosynthetic reaction centers.
mesh_terms: D000814:Aniline Compounds / Q000494:pharmacology; D001205:Ascorbic Acid / Q000494:pharmacology; D002474:Cell-Free System; D004396:Coloring Agents / Q000494:pharmacology; D003624:Darkness; D005470:Fluorometry; D007097:Imines / Q000494:pharmacology; D007700:Kinetics; D008027:Light; D010084:Oxidation-Reduction; D010619:Phenazines / Q000494:pharmacology; D010788:Photosynthesis; D011809:Quinones / Q000494:pharmacology; D011830:Radiation Effects; D012241:Rhodopseudomonas / Q000187:drug effects / Q000378:metabolism / Q000528:radiation effects*; D013053:Spectrophotometry; D013447:Sulfites / Q000494:pharmacology
chemical_list: D000814:Aniline Compounds; D004396:Coloring Agents; D007097:Imines; D010619:Phenazines; D011809:Quinones; D013447:Sulfites; D001205:Ascorbic Acid