PMC:7796291 / 9366-9501 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T83","span":{"begin":0,"end":135},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"A charge-monitoring probe was placed 4 cm above the web surface, and the surface potential was measured by line-scanning over the area."}