Article History
Received: 14 June 2017
Accepted: 1 October 2017
First Online: 10 October 2017
Ethics approval and consent to participate
: Not applicable (all experiments performed have used avian embryos at stages before the two-third of the incubation period, according to UE Directive 2010/63).
: Not applicable.
: The authors declare that they have no competing interests.
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