*2.8. Computed Tomography (CT)*

In vivo and in vitro CT images were acquired using an in vivo microCT scanner (Skyscan 1076, Bruker microCT, Kontich, Belgium) with the following settings: 50 kV X-ray source, 200 μA source current, 0.5 mm Al filter, 120 ms exposure time, 22 × 29 mm field of view, 0.7◦ rotation step over a total angel of 180◦, which results in a tomographic dataset with a 35 μm isotropic resolution. The data has been processed using software from the manufacturer (NRecon, Dataviewer, CTvox and CTan). Sample preparation was similar for CT as for PAI.
