A US man has learned that his mother's body, that the family had donated to medical research, was instead used in "blast testing" by the US military.
Jim Stauffer says he only learned what really happened three years after his mother died from Alzheimer's in 2014, aged 73.
Doris Stauffer battled the condition for many years, despite not carrying the gene that often leads to it developing, and medical officials had suggested that her brain be studied after her death.
When she died in 2014 her neurologist could not accept her remains so her son placed her body into the care of the Biological Resource Center (BRC) in Maricopa County, Arizona.
It was sent under the condition that only her brain was to be used for medical research.