Elizabeth Rathburn, from Detroit, has admitted fraud.
She sold diseased and infected body parts to medical and dental students, from International Biological Incorporated, the medical cadaver business she ran with her husband.
Some of the body parts were infected with HIV and Hepatitis B.
She agreed testify against her husband, Arthur, who is set to face a prison term of up to 20 years.
Arthur allegedly purchased the body parts from supplies in Arizona and Illinois, storing them in a warehouse farm near Detroit.
A complete human body could be sold for $10,000 to $100,000; body parts such as a brain fetched $600 and hands and elbows $850.
Picture source: Amadalvarez via Wikimedia