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. 2019 Jun 12;5(6):eaaw1391. doi: 10.1126/sciadv.aaw1391

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Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 4 — (A) Total ion current (TIC) chromatogram of the ancient cannabis from the Jiayi Cemetery, Turpan showing the presence of C16:0 (hexadecanoic acid), C18:0 (octadecanoic acid), and CBN. (B) Chromatogram in select ion mode (SIM) of the ancient cannabis showing several cannabinoids: CBN, cannabidiol (CBD) and cannabicyclol (CBL); (C) TIC chromatogram of the internal charred fragment of wooden brazier M25:2 from the Jirzankal Cemetery; and (D) SIM chromatogram of the internal charred fragment of wooden brazier M25:2.