PMC:7291971 / 12306-12320
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T75","span":{"begin":0,"end":14},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"2.2 Chemistry"}