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. 2014 May 23;19(5):6754–6775. doi: 10.3390/molecules19056754

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© 2014 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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(A) Table with retention factor values for compounds listed on the TLC. (B) Representative TLC plates of (i) Au-GSH and (ii) Au-GSH-(Trp)₂ spotted (a) before purification, (b) after purification by ultracentrifugation, and (c) of free GSH or Trp in butanol/acetic acid/H₂O (12:3:5) solvent.