PMC:7443692 / 56545-56661
Annnotations
2_test
{"project":"2_test","denotations":[{"id":"32841605-28874712-19659562","span":{"begin":19,"end":23},"obj":"28874712"}],"text":"2.2.2 (Liu et al., 2017) was used for database searches with mass tolerance set as 20 ppm for both precursors and fr"}