Journal Pre-proof The mule (Equus mulus) as a recipient of horse (Equus caballus) embryos: Comparative aspects of early pregnancy with mares C.E. Camargo, S. Fiala Rechsteiner, R.C. Macan, L.E. Kozicki, M.O. Gastal, E.L. Gastal PII: S0093-691X(19)30483-2 DOI: https://doi.org/10.1016/j.theriogenology.2019.10.029 Reference: THE 15224 To appear in: Theriogenology Received Date: 8 September 2019 Revised Date: 27 October 2019 Accepted Date: 28 October 2019 Please cite this article as: Camargo CE, Rechsteiner SF, Macan RC, Kozicki LE, Gastal MO, Gastal EL, The mule (Equus mulus) as a recipient of horse (Equus caballus) embryos: Comparative aspects of early pregnancy with mares, Theriogenology (2019), doi: https://doi.org/10.1016/ j.theriogenology.2019.10.029. This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2019 Published by Elsevier Inc.