"Picket fence porphyrins."  Synthetic models for oxygen binding hemoproteins.
D006420:Hemeproteins; D008956:Models, Chemical; D010100:Oxygen; D011166:Porphyrins / Q000138:chemical synthesis*; D011485:Protein Binding; D013057:Spectrum Analysis
D006420:Hemeproteins; D011166:Porphyrins; D010100:Oxygen