PMC:7755033 / 12960-12995
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T109","span":{"begin":16,"end":35},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Chemical Class: Piperidine Alkaloid"}