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.⏎
Vector - An organism (usually an arthropod such as a flea, mosquito, or tick) that carries an infectious agent from one host to another.⏎
Suburbanization - The process of land conversion and development around the periphery of major cities.⏎
Universal Flu Vaccine - A vaccine that is effective against all forms of the influenza virus.⏎