PMC:7405836 / 16749-16931 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T63507","span":{"begin":47,"end":48},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T5066","span":{"begin":85,"end":90},"obj":"http://purl.obolibrary.org/obo/NCBITaxon_10239"},{"id":"T10671","span":{"begin":168,"end":173},"obj":"http://purl.obolibrary.org/obo/NCBITaxon_10239"}],"text":"e evolution events are frequent and constitute a constantly ongoing process once the virus spreads among new hosts (47). Even though no functional changes occur in the virus associat"}