(AP) — Collaboration between Omaha’s Henry Doorly Zoo and the University of Nebraska Medical Center is helping monitor and learn more about the heart health of captive gorillas.

Veterinarians with the zoo and cardiology specialists at UNMC and its hospital are working together to run heart tests on the zoo’s gorillas, which are trained to undergo the tests awake to get the most accurate results.

That training was on display Friday at the zoo, when 30-year-old gorilla Mosuba followed commands to put his hands against wire mesh separating him from cardiac ultrasonographer Christine DuPree. DuPree then used a special probe to conduct a heart sonogram on the ape.

Mosuba’s results will be entered into a national gorilla cardiac database called the Great Ape Heart Project.