CORD-19:fec0c97b9bdc012b76f082b8bcd6ba0efbb4f5c3 / 8957-9125 JSONTXT

{"project":"CORD-19-Sentences","denotations":[{"id":"TextSentencer_T57","span":{"begin":0,"end":168},"obj":"Sentence"},{"id":"TextSentencer_T57","span":{"begin":0,"end":168},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Mathematical theory has demonstrated that receptor-use evolution should lead to diversification since accessing new host types alters the phages' ecological niches 19 ."}