This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1111/jfb.14449 Effect of dietary supplementation with yeast Saccharomyces cerevisiae on skin, serum and liver of gilthead seabream (Sparus aurata L) Cristóbal Espinosa, Mª Ángeles Esteban* Immunobiology for Aquaculture Group, Department of Cell Biology and Histology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain * Corresponding author: M.A. Esteban, Department of Cell Biology and Histology, Faculty of Biology, Campus Regional de Excelencia Internacional “Campus Mare Nostrum”, University of Murcia. 30100 Murcia, Spain E-mail address: aesteban@um.es Funding Information This work was supported by the MINECO co-funded by the European Regional Development Funds (ERDF/FEDER) (grant no. AGL2017-88370-C3-1-R) and This article is protected by copyright. All rights reserved.