VICE News gets rare access to Europe's largest primate testing facility, the Biomedical Primate Research Center (BPRC) in the Netherlands, where scientists try to find cures for the worst human diseases, while claiming to provide unparalleled care for the monkeys in the hope they live the most animal friendly life before and during testing.

Once selected, inside the laboratories, monkeys are shaved, anesthetized, and experimented on for research purposes.

Yet the center remains controversial. Protestors gather regularly in front of its gates and there are calls in the Dutch parliament to close the site and switch to alternatives for testing on primates.