PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
10421035-4	1999	At rest, 13C/12C in expired CO2 was 4.7+/-0.2% delta 13C PDB-1 lower than in blood CO2.	5-(2-formyl-3-hydroxyphenoxy)pentanoic acid	13-16	PDB1	Homo sapiens	57-62	
10421035-8	1999	From a methodological point of view, these results indicate that 13C/12C in expired CO2 adequately tracks 13C/12C in blood CO2 with a constant approximately 4.6 % delta 13C PDB-1 difference.	5-(2-formyl-3-hydroxyphenoxy)pentanoic acid	69-72	PDB1	Homo sapiens	173-178