PMC:1087847 / 21793-21796 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T15089","span":{"begin":0,"end":3},"obj":"NN"}],"text":"kDa"}

{"project":"biosemtest","denotations":[{"id":"T14864","span":{"begin":0,"end":3},"obj":"UMLS/C1532717"}],"text":"kDa"}