Liebe, Franziska http://orcid.org/0000-0002-4722-3709
Liebe, Hendrik http://orcid.org/0000-0002-2545-9358
Kaessmeyer, Sabine http://orcid.org/0000-0002-4500-8191
Sponder, Gerhard http://orcid.org/0000-0002-5588-1250
Stumpff, Friederike http://orcid.org/0000-0001-9518-9237
Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (STU 258/7-1)
Sonnenfeld Stiftung (does not apply)
Article History
Received: 13 February 2020
Revised: 31 March 2020
Accepted: 6 May 2020
First Online: 26 May 2020
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest. Friederike Stumpff is the holder of a patent that was transferred to a startup company.
: The maintenance and surgical treatment of <i>Xenopus laevis</i> frogs was in accordance with the guidelines of German legislation, with approval by the animal welfare officer for the Freie Universität Berlin and under the governance of the Berlin Veterinary Health Inspectorate (Landesamt für Gesundheit und Soziales Berlin, permit G0025/16). Bovine ruminal epithelium was obtained from Holstein-Friesian cattle slaughtered for meat production in a commercial abattoir (Beelitz, Germany), also under control of the German authorities.