The Immune System
Категорія: Тіло / Здоров'я, Школа
skin, mucus and stomach acid images - https://556133320104161018.weebly.com/
white blood cells image - http://colloidalsilversecrets.blogspot.com.au/2015/02/how-colloidal-silver-boosts-immunity.html
antibody image - https://scienceaid.net/biology/micro/immune.html
cover image - https://www.liverdoctor.com/strengthen-immune-system-selenium/