PMC:7574920 / 27508-27619 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T199","span":{"begin":0,"end":111},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"As an additional precaution, we kept the samples in the cold (using an ice-cold metal block) whenever possible."}