PubMed:821948 / 307-352
Annnotations
sentences
{"project":"sentences","denotations":[{"id":"T3","span":{"begin":0,"end":45},"obj":"Sentence"},{"id":"T3","span":{"begin":0,"end":45},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Its molecular weight is estimated at 210,000."}