Please follow https://www.ars.usda.gov/news-events/news/research-news/2020/usda-ars-researchers-introduce-treatment-to-prevent-parasites-in-sheep/.

Please follow https://www.ars.usda.gov/news-events/news/research-news/2020/usda-ars-researchers-introduce-treatment-to-prevent-parasites-in-sheep/.