[1] Wolfson Centre for Age-Related Disease, King's College London, Hodgkin Building, Guy's Campus, London SE1 1UL, United Kingdom
[2] Centre for Ultrastructural Imaging, King's College London, New Hunt's House, Guy's Campus, London SE1 1UL, United Kingdom
[3] Pharmaceutical Sciences Research Division, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, United Kingdom