AMVA Amid shifts toward nonanimal models in preclinical studies, researchers, veterinarians say animal models remain vital August 13, 2026 Federal health agencies are looking to reduce animal testing in favor of new approach methodologies such as organ-on-chip models. Scientists and veterinarians counter that animal models remain irreplaceable for studying complex systems such as the brain and immune system. https://www.avma.org/news/amid-shifts-toward-nonanimal-models-preclinical-studies-res...