School of Biomedical Sciences, University of Ulster at Coleraine, Cromore Road, Northern Ireland, UK. dp.berrar@ulster.ac.uk|School of Biomedical Sciences, University of Ulster at Coleraine, Cromore Road, Northern Ireland, UK. dp.berrar@ulster.ac.uk|School of Biomedical Sciences, University of Ulster at Coleraine, Cromore Road, Northern Ireland, UK. dp.berrar@ulster.ac.uk