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. 2018 Nov 19;56(2):210–218. doi: 10.1177/0004563218812986

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© The Author(s) 2018

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 2. — The standard curves of FA derivation with ampicillin analysed by Fluo-HPLC. (a) The derivant between FA and ampicillin detected at λex/em = 346/422 nm. (b) to (d). The HPLC peak of blank control, FA and urine FA, respectively. Retention time: 7.508 min and (e) Standard curves between FA and peak area of fluorescence intensity.

FA: formaldehyde.