PMC:149366 / 36290-36293 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T8103","span":{"begin":0,"end":3},"obj":"NN"}],"text":"PFA"}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T7825","span":{"begin":0,"end":3},"obj":"CHEBI_EXT:paraformaldehye"}],"text":"PFA"}