Body Worlds is a traveling exposition of dissected human bodies, animals, and other anatomical structures of the body that have been preserved through the process of plastination. Gunther Von Hagens developed the preservation process which "unite subtle anatomy and modern polymer chemistry", in the late 1970s.A series of Body Worlds anatomical exhibitions has toured many countries worldwide, sometimes raising controversies about the sourcing and display of actual human corpses and body parts. Nevertheless, Von Hagens maintains that all human specimens were obtained with full knowledge and consent of the donors before they died, and his organization keeps extensive documentation of this permission. Von Hagens emphasizes both educational and artistic aspects of his complex and innovative dissections, and offers online teaching guides for educators. He also tries to distinguish his efforts from those of competitors who may have been less thorough in obtaining advance permission from their specimen sources.BackgroundMethodThe exhibit states that its purpose and mission is the education of laymen about the human body, leading to better health awareness. All the human plastinates are from people who donated their bodies for plastination via a body donation program. Each Body Worlds exhibition contains approximately 25 full-body plastinates with expanded or selective organs shown in positions that enhance the role of certain systems.To produce specimens for Body Worlds, von Hagens employs 340 people at five laboratories in three countries, China, Germany and Kyrgyzstan. Each laboratory is categorized by specialty, with the China laboratory focusing on animal specimens. One of the most difficult specimens to create was the giraffe that appears in Body Worlds & The Cycle of Life. The specimen took three years to complete – ten times longer than it takes to prepare a human body. Ten people are required to move the giraffe, because its final weight (like all specimens after plastination) is equal to the original animal.