Assertion: peptide's protein | /r/CapableOf | quantify the source protein
Facets:
Source sentences:
text: Peptide fragments refer to fragments of proteins that are used to identify or quantify the source protein..
text: Peptide fragments refer to fragments of proteins that are used to identify or quantify the source protein..
text: Peptide fragments refer to fragments of proteins that are used to identify or quantify the source protein.