Mucous Membrane - The moist linings of body passages and internal cavities involved with absorption and secretion of substances.⏎
Latent Infection - An infection that is currently not producing or showing any symptoms but has the potential of being reactivated and then manifesting symptoms.⏎
Metabolism - The sum total of chemical reactions that occur within a living cell both to build new molecules within the cell and break down and assimilate sources of energy for the cell.⏎
Lipid - A broad group of molecules including fats and waxes that are insoluble in water and are an important part of living cells.⏎
Infectious Disease - A type of illness caused by a pathogenic agent, including viruses, bacteria, fungi, protozoa, parasites, or abnormal proteins known as prions.⏎