Fig 2. Predicted oxygen concentrations through the centre of PCLS under atmospheric oxygen conditions (21%) with different diameters.

The panel on the left shows the concentrations of oxygen when the PCLS is at the top of the well (a), the middle of the well (c) and the bottom of the well (e) for a slice with 5mm diameter, whilst (b), (d) and (f) depict the concentrations in the same locations for a slice with 8mm diameter.