A medical museum in the US is slated to exhibit part of theoretical physicist Albert Einstein's brain, more than five decades after his death. The Mutter Museum of the College of Physicians of Philadelphia will also display 46 slides donated by Dr. Lucy Rorke-Adams, AP reported. The 82-year-old neuropathologist said she wanted to make sure that the slides remain safe in a museum. Albert Einstein was a German-born physicist, known as the father of modern physics, who developed the well-known theory of general relativity which revolutionized the science. Dr. Rorke-Adams who received Einstein's brain samples from a colleague in the mid-1970s said the brain looks youthful for a man of his age. “They are a very important part of medical history,” she said. The bulk of Einstein's brain has been kept at the University Medical Center at Princeton, where the autopsy was performed by a physician named Thomas Harvey. It is said that Harvey removed the brain without permission, but later obtained the family's approval to conduct scientific studies.