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. 2020 Aug 11;8(8):1221. doi: 10.3390/microorganisms8081221

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© 2020 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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Compound-specific δ¹⁵N values of amino acids extracted from the host tissue (open symbols), algal symbiont (solid symbols), and mucus (cross) fractions of Acropora digitifera collected from Station 10. TL_Glx is the trophic position estimated from the difference in δ¹⁵N values between Glx and Phe using Equation (2) [67]. Error bars represent the standard deviation of triplicate analyses of the same sample. The δ¹⁵N values of Met could not be determined for the symbiotic algal fraction due to insufficient sample quantity.