Genetics - A branch of biology that studies heredity and variation in organisms.⏎
Encephalitis - Inflammation of the brain, often caused by a virus.⏎
Contagion - A general term for any disease-causing infectious agent spread by direct or indirect contact.⏎
Disease - Any abnormal condition that affects all or part of an organism, resulting in symptoms such as pain or loss of function.⏎
Cytokine - A type of protein secreted by cells in the immune system that carries signals that facilitate cell-to-cell communication and help regulate the way the immune system responds to inflammation and infection.⏎