| fluid communication | 0.54 |
| communication | 0.33 |
| length | 0.59 |
| first portion | 0.25 |
| globular configuration | 0.25 |
| open distal end | 0.25 |
| therapeutic agent | 0.25 |
| open | 0.25 |
| formed | 0.59 |
| evacuated | 0.39 |
| filled with fluid | 0.39 |
| pressurized | 0.33 |
| filled | 0.33 |
| filled with low acousti… | 0.33 |
| offset | 0.33 |
| deflated | 0.33 |
| filled with nitrogen | 0.25 |
| closed | 0.25 |
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