PubMed:18112111
Annnotations
sentences
{"project":"sentences","denotations":[{"id":"T1","span":{"begin":0,"end":107},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"The p-phenyl azobenzoyl esters of the natural estrogens and their separation by chromatographic adsorption.\n"}