title: Triplet states in photosynthesis.
mesh_terms: D001665:Binding Sites; D002734:Chlorophyll / Q000032:analysis; D004578:Electron Spin Resonance Spectroscopy; D008968:Molecular Conformation; D010788:Photosynthesis; D010944:Plants / Q000032:analysis; D012247:Rhodospirillum rubrum / Q000032:analysis; D013045:Species Specificity
chemical_list: D002734:Chlorophyll