4,000-Year-Old Brain Tissue Was Preserved After Boiling In Its Own Fluids By Katie Serena Published September 12, 2017 The brain was boiled, dried, and preserved under sediment for almost 4,000 years. Bronze Age Brain UC San Diego Health Scientists in Turkey discovered a Bronze Age human brain that has been preserved for 4,000 years. The brain was discovered in Seyitomer Hoyuk, Turkey, and is one of the oldest ever discovered. It is also one of the most intact. Brain tissue is rich in enzymes and cells deteriorate quickly after death which is why scientists rarely, if ever, find intact specimens....