Germ Theory - A theory in medicine stating that microorganisms are the causative agents of infectious, contagious diseases.⏎
Lipid - A broad group of molecules including fats and waxes that are insoluble in water and are an important part of living cells.⏎
Morbidity - The relative occurrence of a disease or a condition that causes illness.⏎
Incubation Time - The period of time between exposure to an infectious agent and the appearance of symptoms of the infection or disease it causes.⏎
Mucous Membrane - The moist linings of body passages and internal cavities involved with absorption and secretion of substances.⏎