PubMed:7706235 / 67-87 JSONTXT

{"project":"jnlpba-st-training","denotations":[{"id":"T2","span":{"begin":0,"end":20},"obj":"DNA"}],"text":"protooncogene p21ras"}

{"project":"GENIAcorpus","denotations":[{"id":"T4","span":{"begin":0,"end":20},"obj":"DNA_domain_or_region"}],"text":"protooncogene p21ras"}