title: Introductory note with my personal recollection of early hemoglobin research.
mesh_terms: D002627:Chemistry, Physical; D004578:Electron Spin Resonance Spectroscopy; D005290:Ferric Compounds; D005296:Ferrous Compounds; D006418:Heme; D006420:Hemeproteins; D006454:Hemoglobins / Q000266:history*; D049673:History, 20th Century; D009682:Magnetic Resonance Spectroscopy; D009211:Myoglobin / Q000266:history; D010108:Oxyhemoglobins; D011487:Protein Conformation
chemical_list: D005290:Ferric Compounds; D005296:Ferrous Compounds; D006420:Hemeproteins; D006454:Hemoglobins; D009211:Myoglobin; D010108:Oxyhemoglobins; D006418:Heme