CORD-19:f1fd5f33dcbe0aae1ce2efb7b7d22eafb4247f02 / 2048-2288 6 Projects
Annnotations
| Id | Subject | Object | Predicate | Lexical cue |
|---|---|---|---|---|
| T7 | 0-240 | Epistemic_statement | denotes | For many years viral infections were associated with asthma exacerbations (5) , but determining the specific virus present during the exacerbation was difficult, as serology and tissue culture infectivity techniques were not very sensitive. |