SAN ANTONIO (CBSDFW.COM) – The U.T. Health Science Center is turning to a new approach to studying autism.

Dr. Ray Palmer is using discarded baby teeth to understand what children with and without autism are exposed to in the womb as they grow.

Palmer says the teeth provide a better record than blood and hair analysis of what a baby is exposed to in the womb.

The U.T. Health Science Center is still taking donations of teeth from children with and without autism. To find out about how to donate, contact the Department of Family and Community Medicine at (210) 562-6550.