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. 2016 Apr 18;16:23. doi: 10.1186/s12871-016-0188-z

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© Guo et al. 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 4 — The effect of ketamine on heart function. a Comparison of the heart rate (beats per minute) in the control and ketamine-treated embryos. n = 10. *P < 0.05. b Comparison of ventricular shortening fraction (VSF) in the control and ketamine-treated embryos. n = 6. *P < 0.05. The data are expressed as the means ± SD