1. Centre for Biological Engineering, Loughborough University, Leicestershire, LE11 3TU, UK
2. Centre for Bioprocess Engineering, University of Birmingham, Birmingham, B15 2TT, UK
3. FUJIFILM Diosynth Biotechnologies, Billingham, TS23 1LH, UK
4. School of Life & Health Sciences, Aston University, Aston Triangle, Birmingham, B4 7ET, UK