I wonder how much Peter himself has got interests in anatomy and medicine, but the art-work and designs and photos for "Scratch My Back" and all the "New Blood Live"-tour posters feature anatomical and hematological pictures.
Marc Bessant is the man behind all the design, sure - nothing new, i know - but it`s still interesting

so far we had:
erythrocytes / red blood cells ("SMB")
intracranial brain images ("SMB")
heart (some tour t-shirts 2010)
embryo in utero ("New Blood London 2011")
a macrophage ("New Blood North America")
what will appear on the "New Blood"-CD. . .?