extraction the action of taking out something (especially using effort or force); "the dentist gave her a local anesthetic prior to the extraction"
plastination a process involving fixation and dehydration and forced impregnation and hardening of biological tissues; water and lipids are replaced by curable polymers (silicone or epoxy or polyester) that are subsequently hardened; "the plastination of specimens is valuable for research and teaching"
freeze-drying,
lyophilisation,
lyophilization a method of drying food or blood plasma or pharmaceuticals or tissue without destroying their physical structure; material is frozen and then warmed in a vacuum so that the ice sublimes
