PMC:7594251 / 15910-16074 JSONTXT

{"project":"LitCovid-PD-CHEBI","denotations":[{"id":"T120","span":{"begin":61,"end":63},"obj":"Chemical"}],"attributes":[{"id":"A120","pred":"chebi_id","subj":"T120","obj":"http://purl.obolibrary.org/obo/CHEBI_49637"}],"text":"Additionally, the gyromagnetic ratio is ~4 times weaker than 1H and therefore 13C spectra are far more difficult to obtain especially for less concentrated samples."}

{"project":"LitCovid-PubTator","denotations":[{"id":"170","span":{"begin":61,"end":63},"obj":"Chemical"},{"id":"171","span":{"begin":78,"end":81},"obj":"Chemical"}],"attributes":[{"id":"A171","pred":"tao:has_database_id","subj":"171","obj":"MESH:C000615229"}],"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":"Additionally, the gyromagnetic ratio is ~4 times weaker than 1H and therefore 13C spectra are far more difficult to obtain especially for less concentrated samples."}

{"project":"LitCovid-sentences","denotations":[{"id":"T114","span":{"begin":0,"end":164},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Additionally, the gyromagnetic ratio is ~4 times weaker than 1H and therefore 13C spectra are far more difficult to obtain especially for less concentrated samples."}