Gunther von Hagens’s Body Worlds, a traveling exhibition of preserved human bodies and body parts, has been the subject of controversy since it opened in Tokyo in 1995. Developers claim that the exhibit uses only specimens from willing donors and is intended to educate laymen about the human body, but some see the project as denigrating the deceased, and religious groups have voiced objections to the public exhibition of human corpses. What technique is used to preserve the human tissue? Discuss