PMC:7696151 / 6684-6816 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T57","span":{"begin":11,"end":95},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"al trials. The considered in vivo studies were carried out using allograft or xenograft models. The most important outcomes of the r"}