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. 2019 May 29;7:100572. doi: 10.1016/j.mex.2019.05.028

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© 2019 The Authors

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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Fig. 3 — Amino acids analysis: representative m/z profile of NL 102 scan (1) alanine, (2) alanine ISTD, (3) aspartic acid, (4) aspartic acid ISTD, (5) glutamic acid (6) glutamic acid ISTD, (7) leucine/isoleucine, (8) leucine/isoleucine, (9) methionine, (10) methionine ISTD, (11) ornithine, (12) ornithine ISTD, (13) phenylalanine, (14) phenylalanine ISTD, (15) tyrosine, (16) tyrosine ISTD, (17) valine, (17) valine ISTD.