What do you want - a sliver of human head, a piece of smokers' lungs or a slice of human hand? All that and much more are now available through a mail order service set up in Germany.

The service has been started by controversial German anatomist Gunther von Hagens, who is the inventor of a system known as plastination in which fluids are removed from dead humans or animals and replaced with hardened silicon. This allows body parts to be preserved indefinitely.