PMC:7405836 / 16756-16977 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T63507","span":{"begin":40,"end":41},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T5066","span":{"begin":78,"end":83},"obj":"http://purl.obolibrary.org/obo/NCBITaxon_10239"},{"id":"T10671","span":{"begin":161,"end":166},"obj":"http://purl.obolibrary.org/obo/NCBITaxon_10239"}],"text":"tion 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 associated with this adaptive evolution, close monitor"}