| right lung | 9 |
| left lung | 6 |
| donor lung | 2 |
| human lung | 2 |
| healthy lung | 1 |
| the chest | 0.53 |
| the rib cage | 0.28 |
| mammal | 0.28 |
| complex life forms | 0.28 |
| one’s abdomen | 0.28 |
| take in oxygen | 0.72 |
| hold much air | 0.69 |
| become inflamed | 0.67 |
| remove carbon dioxide | 0.62 |
| bring oxygen | 0.60 |
| take in air | 0.57 |
| fill with air | 0.56 |
| establish in hyperinfla… | 0.54 |
| become scarred | 0.49 |
| fill with fluid | 0.48 |
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| pneumonia | 0.45 |
| shortness of breath | 0.40 |
| pulmonary edema | 0.39 |
| breathing difficulties | 0.37 |
| asthma | 0.36 |
| chest pain | 0.34 |
| infection | 0.34 |
| breathlessness | 0.33 |
| lung failure | 0.26 |
| symptom | 0.25 |
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| the heart | 0.43 |
| the tumor | 0.41 |
| esophagus | 0.36 |
| blood cells | 0.34 |
| more room | 0.34 |
| three lobes | 0.32 |
| sponge-like consistency | 0.30 |
| large surface area | 0.30 |
| two circulatory systems | 0.28 |
| nerve cells | 0.28 |
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| lots of moisture | 0.25 |
| all the help | 0.25 |
| less blood supply | 0.16 |
| death | 0.36 |
| emphysema | 0.35 |
| lung cancer | 0.30 |
| pneumothorax | 0.19 |
| atelectasis | 0.16 |
| weight loss | 0.16 |
| organ | 0.60 |
| vital organ | 0.46 |
| main organs | 0.41 |
| complex organ | 0.39 |
| essential organs of res… | 0.38 |
| uppermost organ | 0.35 |
| delicate organ | 0.34 |
| two sponge-like organs | 0.34 |
| two spongy organs | 0.30 |
| the most commonly invol… | 0.16 |
| removed | 0.79 |
| inflated | 0.67 |
| transplanted | 0.65 |
| ventilated | 0.63 |
| filled with air | 0.62 |
| filled with fluid | 0.62 |
| examined | 0.61 |
| harvested | 0.60 |
| weighed | 0.57 |
| collected | 0.55 |
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