Virus - An infectious agent that is only capable of replicating itself inside the living cells of other organisms.⏎
Zoonoses - Any disease that can be transmitted from vertebrate animals to humans.⏎
Suburbanization - The process of land conversion and development around the periphery of major cities.⏎
Tissue Culture - The process by which tissues are intentionally grown under controlled conditions.⏎
White Blood Cell - A special type of cell that works as part of the immune system to defend the body against disease and infection.⏎