CORD-19:4abc50cfc81265083d4cb2aed0a493bb704d0b5b / 41486-41639 JSONTXT

{"project":"CORD-19-Sentences","denotations":[{"id":"TextSentencer_T205","span":{"begin":0,"end":153},"obj":"Sentence"},{"id":"T79468","span":{"begin":0,"end":153},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"While initial studies have used naked mRNA as the vaccine, much effort has been put into enhancing the delivery efficiency and potency of an RNA vaccine."}