WASHINGTON (AP) — A museum that holds the world’s largest collections of brains and microscopes is preparing to close its doors at the Walter Reed Army Medical Center in Washington and move to Silver Spring.

The National Museum of Health and Medicine will close its current location April 3. The museum will become part of Fort Detrick’s Forest Glen Annex in Silver Spring this fall.

The museum’s artifacts range from the bullet that killed President Abraham Lincoln to the amputated leg of a Civil War general. It also includes an Air Force tent hospital where thousands of U.S. soldiers were treated during the Iraq War.

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