1. Laboratory of General Biochemistry and Physical PharmacyFaculty of PharmacyGhent University Ghent B‐9000 Belgium
2. Centre for Advanced Light MicroscopyGhent University Ghent B‐9000 Belgium
3. Joint Laboratory of Advanced Biomedical Technology (NFU‐UGent)College of Chemical EngineeringNanjing Forestry University (NFU) Nanjing 210037 P. R. China