The questions about the thought-to-be missing brains held in up to 60 jars, some of which contained multiple brains were prompted by a recently released book about a brain collection that the university received 28 years ago from the Austin State Hospital.
The specimens were part of the original collection of 200 brains and had been stored at the campus' Animal Resources Center.
Fellow professor and co-curator Lawrence Cormack said it was "possible word got around among undergraduates and people started swiping them for living rooms or Halloween pranks."
The university then investigated. Yesterday, the school said it couldn't provide a specific number of how many brains were destroyed. It also said a committee would be appointed to investigate the decision to destroy some of the brains and how all the specimens have been handled since the school received the collection.
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The school's preliminary investigation also found no evidence to support claims that the brain of Charles Whitman, who fatally shot 16 people from the university's clock tower in 1966, was ever part of the collection.
"It may have been an urban legend that developed over the years," university spokesman Gary Susswein said Wednesday. He also said the school was still investigating whether any of the brains were shared with other institutions.