PMC:7019868 / 4482-4658 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T30","span":{"begin":0,"end":176},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Therefore, to combat the emergence of PED as well as to immediately suppress any future outbreaks, studies have been carried out to develop safe and effective vaccines [13,14]."}

{"project":"2_test","denotations":[{"id":"31905842-27545066-144353222","span":{"begin":169,"end":171},"obj":"27545066"},{"id":"31905842-27964998-144353223","span":{"begin":172,"end":174},"obj":"27964998"}],"text":"Therefore, to combat the emergence of PED as well as to immediately suppress any future outbreaks, studies have been carried out to develop safe and effective vaccines [13,14]."}