PMC:7461420 / 13359-13368 JSONTXT

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{"project":"LitCovid-PubTator","denotations":[{"id":"469","span":{"begin":1,"end":9},"obj":"Chemical"}],"attributes":[{"id":"A469","pred":"tao:has_database_id","subj":"469","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"}