Ethics approval and consent to participate
All samples used in this study were received from Boehringer Ingelheim Vetmedica Korea Ltd. according to a Nondisclosure Agreement (No. 20190037 and 20200009) of “Diagnostic Tests for Development of Domestic Livestock Industry” signed with College of Veterinary Medicine, Seoul National University. All protocols related to samples collection were approved by Seoul National University Research and Development Business Foundation (SNU-200626-2). This article does not contain any studies with alive animals performed by any of the authors.