PMC:7115396 / 7724-7857 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T96","span":{"begin":37,"end":38},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"The H120 vaccine strain is currently a widely used vaccine strain, created from 120 serial passages of the H strain isolated in 1956."}

{"project":"LitCovid-sentences","denotations":[{"id":"T45","span":{"begin":0,"end":133},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"The H120 vaccine strain is currently a widely used vaccine strain, created from 120 serial passages of the H strain isolated in 1956."}