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. 2017 Apr 1;10(2):38. doi: 10.3390/ph10020038

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© 2017 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 (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Size-exclusion chromatography of pharmaceutical preparation of CS-GlcN. (A) CS from preparations containing shark (S-CS) and bovine (B-CS) cartilages (blue and gray lines, respectively). (B) International standards from European and United State pharmacopeia (EP-Std in blue and USP-Std in gray, respectively). Chromatography were performed using a set of TSK gel G4000 SW/G3000 SW columns. The eluents were monitored via differential refractive index. GlcN in panel A indicates the elution of the glucosamine from the preparations and the ? in panel B depicts a non-identified component found in the standard from the European pharmacopeia.