Received: 23 October 2019
Revised: 8 February 2020
Accepted: 18 February 2020
First Online: 4 March 2020
Ethics approval and consent to participate
: All procedures to collect the allanto-amniotic membrane were conducted following the standard veterinary practice and in accordance with the 2010/63 EU directive on animal protection and Italian Law (D.L. No. 116/1992). Equine blood collection was approved by the University of Milan Ethics Committee (Protocol Number 41/15), and informed owner consent was obtained.
: Not applicable.
: The authors declare that they have no competing interests.