Skin Lesion - Any abnormal tissue on the skin caused by injury or disease.⏎
Tissue Culture - The process by which tissues are intentionally grown under controlled conditions.⏎
Universal Flu Vaccine - A vaccine that is effective against all forms of the influenza virus.⏎
Toxin - A poisonous substance, often a protein, produced by the metabolic processes of living cells or organisms that can cause disease if introduced into the body.⏎
Yeast - A broad group of microscopic fungi that includes harmless forms of yeast used in baking and alcoholic fermentation as well as pathogenic species that can cause disease.⏎