PMC:7074424 / 1004-1074
Annnotations
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T8","span":{"begin":51,"end":52},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"the occurrence of frequent recombination events is a major deterrent f"}