PMC:7281378 / 45110-45170 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7281378","sourcedb":"PMC","sourceid":"7281378","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7281378","text":"nasal swab samples from three pregnant sows exhibiting influ","tracks":[]}