The state health department should develop rules for humane animal experimentation and require facilities using experimentation to register with the state and comply with those rules, Michigan Attorney General Dana Nessel said in a formal opinion released Monday.
"Ultimately, the most appropriate manner in which to develop the required standards and implement the required registration is a matter left to DHHS," Nessel wrote.
The Department of Health and Human Services said it was reviewing Nessel's opinion.
