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Summary of results on parenthesis usage distribution.
| Abstracts | Bodies | |
|---|---|---|
| List enumerators | 3 | 1,399 |
| Part of gene name | -- | -- |
| Table or figure | -- | 2,825 |
| Citation | -- | 172 |
| P value | 2 | 146 |
| Data | 11 | 2,116 |
| Singular/plural | 2 | 33 |
| Abbreviation or symbol | 124 | 1,862 |
| Parenthetical statement | 23 | 3,453 |
| Unknown | 61 | 4,831 |
| Total | 226 | 16,837 |
