CORD-19:4abc50cfc81265083d4cb2aed0a493bb704d0b5b / 26961-27107 JSONTXT

{"project":"CORD-19-Sentences","denotations":[{"id":"TextSentencer_T136","span":{"begin":0,"end":146},"obj":"Sentence"},{"id":"T14208","span":{"begin":0,"end":146},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"In addition, vectors based on PRV have been developed for delivery of viral antigens, to improve the efficacy of vaccines for pig pathogens [78] ."}