| red blood cells | 0.67 |
| the blood | 0.49 |
| myoglobin | 0.28 |
| muscle | 0.28 |
| lung | 0.25 |
| adult | 0.25 |
| vertebrate | 0.25 |
| many invertebrates | 0.25 |
| carry oxygen | 0.78 |
| bind oxygen | 0.72 |
| combine with oxygen | 0.61 |
| release oxygen | 0.59 |
| pick up oxygen | 0.51 |
| carry carbon dioxide | 0.50 |
| enable red blood cells | 0.40 |
| absorb light | 0.38 |
| remain stable | 0.37 |
| combine with co | 0.36 |
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| blood clots | 0.19 |
| iron | 0.48 |
| high affinity | 0.35 |
| two alpha | 0.32 |
| two gamma polypeptide s… | 0.32 |
| competitive binding aff… | 0.28 |
| quaternary structure | 0.28 |
| ferric iron | 0.16 |
| death | 0.16 |
| protein | 0.64 |
| iron-rich protein | 0.49 |
| oxygen-transporting pro… | 0.38 |
| molecule | 0.38 |
| globular protein | 0.30 |
| two proteins | 0.32 |
| composed of four protei… | 0.48 |
| checked before treatment | 0.48 |
| measured | 0.44 |
| composed of two alpha c… | 0.39 |
| removed | 0.36 |
| released | 0.36 |
| bound to glucose | 0.35 |
| produced | 0.33 |
| protected by a reductio… | 0.33 |
| dispensed | 0.32 |
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