AUGUSTA, Ga. (AP) — Georgia Regents University officials say they're changing the way they gather animals for research purposes.

The National Institutes of Health has prohibited funding projects that use animals purchased from Class B vendors — which are allowed to gather animals from shelters and random sources.

The Humane Society of the United States said in November that the school had been buying dogs to test human dental implants from Class B dealers. Animal welfare activists have said dogs in the program had teeth pulled and replaced before being euthanized.

University officials have said the testing program was regularly reviewed by the U.S. Department of Agriculture, and the university adheres to local, state and federal guidelines.

GRU officials say the school will use Class A dealers, who gather animals from private sources.