We are sitting in a gleaming white box of a room at the Serpentine Gallery: me, Hamilton and Donagh, a woman even more amazing to look at than him.

Electron microscopy has elegantly shown the incredible plasticity of the relatively bulky white cells as they crawl through the narrow, serpentine pathways between endothelial cells.

The red serpentine form carves an opening up the middle to a grand staircase clad in a white mosaic tile.