About the Authors

Yuguo Zang

zang@hochschule-bc.de

Affiliation Institute of Pharmaceutical Biotechnology, Biberach University of Applied Sciences, Biberach, Germany

Bernd Kammerer

Current address: Center of Biological Systems Analysis, University of Freiburg, Freiburg, Germany

Affiliation Biberach University of Applied Sciences, Biberach, Germany

Maike Eisenkolb

Affiliation Institute of Pharmaceutical Biotechnology, Biberach University of Applied Sciences, Biberach, Germany

Katrin Lohr

Affiliation Boehringer Ingelheim Pharma GmbH&Co. KG., Biberach, Germany

Hans Kiefer

Affiliation Biberach University of Applied Sciences, Biberach, Germany

Competing Interests

KL is employed at Boehringer Ingelheim GmbH, who contributed material (antibody mAb04c) and a minor part of financial support (<15%) to this project. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: YZ HK. Performed the experiments: YZ BK. Analyzed the data: YZ BK HK. Contributed reagents/materials/analysis tools: ME KL. Wrote the paper: YZ HK.