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Tissue Culture and Art Project, Pig Wings, 2000–2001. Pig mesenchymal cells (bone marrow stem cells) grown over biodegradable polymers. a Photographed under coloured light: red bat wings, blue bird wings and green pterosaur wings. b The “bat” (left) and “bird” (right) wings in their culture vessels. Photo credits: Tissue Culture and Art Project. Reproduced with permission from the artists
