Lump of brain

Lump of brain is an item in the Fallout 3 add-on, Point Lookout.

Characteristics
This particular lump of brain is a piece taken directly from the Lone Wanderer's own brain, which was then preserved in a glass jar after extraction by Tobar, all of which takes place during the quest Walking With Spirits.

Location
This lump of brain can be discovered in the engine room of the Duchess Gambit, on the table next to Tobar. It can only be obtained after completing the quest Walking with Spirits, and asking Nadine in the Ark & Dove Cathedral to remove the Lone Wanderer's scar.