| Protein | Synonyms | Taxonomy |
|---|---|---|
| Myoglobin | Homo sapiens (human) | |
| Cytoglobin | Histoglobin; HGb; Stellate cell activation-associated protein | Homo sapiens (human) |
| Neuroglobin | Homo sapiens (human) |
| Compound | Description |
|---|---|
| Oxygen | An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration. |
| heme | The color-furnishing portion of hemoglobin. It is found free in tissues and as the prosthetic group in many hemeproteins. |