PMC:7115396 / 6589-6760 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T83","span":{"begin":109,"end":114},"obj":"http://purl.obolibrary.org/obo/NCBITaxon_10239"}],"text":"Beaudette strains [31], [32], [33], both of which are passage-generated attenuated strains, the mechanism of virus virulence attenuation remains unclear, thereby posing di"}

{"project":"LitCovid-PD-GO-BP","denotations":[{"id":"T5","span":{"begin":115,"end":124},"obj":"http://purl.obolibrary.org/obo/GO_0016032"},{"id":"T6","span":{"begin":115,"end":124},"obj":"http://purl.obolibrary.org/obo/GO_0009405"}],"text":"Beaudette strains [31], [32], [33], both of which are passage-generated attenuated strains, the mechanism of virus virulence attenuation remains unclear, thereby posing di"}

{"project":"2_test","denotations":[{"id":"32057575-11711626-143294054","span":{"begin":19,"end":21},"obj":"11711626"},{"id":"32057575-22999521-143294055","span":{"begin":25,"end":27},"obj":"22999521"},{"id":"32057575-23840781-143294056","span":{"begin":31,"end":33},"obj":"23840781"}],"text":"Beaudette strains [31], [32], [33], both of which are passage-generated attenuated strains, the mechanism of virus virulence attenuation remains unclear, thereby posing di"}