How do small molecules do great things?
D000740:Anemia / Q000378:metabolism; D004912:Erythrocytes / Q000032:analysis*; D005988:Glyceric Acids / Q000097:blood*; D006454:Hemoglobins / Q000378:metabolism; D006801:Humans; D000860:Hypoxia / Q000097:blood*; D010100:Oxygen / Q000097:blood / Q000378:metabolism
D005988:Glyceric Acids; D006454:Hemoglobins; D010100:Oxygen