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. 2014 Feb;61(100):8–15. doi: 10.1016/j.jinsphys.2013.12.005

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© 2013 The Authors

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig. 5 — Haemolymph levels of 5-HT were higher after feeding bees 5 μl of 1.0 M sucrose (dark triangles) than when they were fed 1.0 M sucrose with 0.1 M amygdalin (open diamonds). Dashed line indicates average level of 5-HT in unfed bees. N = 7–11/time point for each treatment.