PMC:7461420 / 52542-52550 JSONTXT

{"project":"LitCovid-PD-CHEBI","denotations":[{"id":"T56","span":{"begin":0,"end":8},"obj":"Chemical"}],"attributes":[{"id":"A46799","pred":"chebi_id","subj":"T56","obj":"http://purl.obolibrary.org/obo/CHEBI_49637"}],"text":"hydrogen"}

{"project":"LitCovid-PubTator","denotations":[{"id":"1585","span":{"begin":0,"end":8},"obj":"Chemical"}],"attributes":[{"id":"A1585","pred":"tao:has_database_id","subj":"1585","obj":"MESH:D006859"}],"namespaces":[{"prefix":"Tax","uri":"https://www.ncbi.nlm.nih.gov/taxonomy/"},{"prefix":"MESH","uri":"https://id.nlm.nih.gov/mesh/"},{"prefix":"Gene","uri":"https://www.ncbi.nlm.nih.gov/gene/"},{"prefix":"CVCL","uri":"https://web.expasy.org/cellosaurus/CVCL_"}],"text":"hydrogen"}