Strain - A genetic variant or specific subtype of a microorganism, such as a virus or bacteria.⏎
Sterilization - The process of destroying all forms of life, including infectious agents, from a surface, fluid, or biological medium with the use of heat, chemicals, irradiation, high pressure, filtration, or some combination of these methods.⏎
Species - One of the most basic units of biological classification, ranking just below the genus and comprising individuals or populations capable of interbreeding.⏎
Skin Lesion - Any abnormal tissue on the skin caused by injury or disease.⏎