Tissue Culture - The process by which tissues are intentionally grown under controlled conditions.⏎
Virus - An infectious agent that is only capable of replicating itself inside the living cells of other organisms.⏎
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. ⏎
Zoonoses - Any disease that can be transmitted from vertebrate animals to humans.⏎
Transition Zone - The area, sometimes referred to as an ecotone, encompassing the edges of two distinct ecosystems, such as the area where a forest intersects with grassland.⏎