Strain - A genetic variant or specific subtype of a microorganism, such as a virus or bacteria.⏎
White Blood Cell - A special type of cell that works as part of the immune system to defend the body against disease and infection.⏎
Sperm Cell - The male gamete, or sex cell, which carries the hereditary material of the male parent and unites with the female egg cell during sexual reproduction.⏎
Suburbanization - The process of land conversion and development around the periphery of major cities.⏎
Symptom - A subjective indication of the presence of disease or a departure from the body’s normal state of functioning.⏎