Infect.—To communicate disease germs.
Infection.—An agent by which disease may be communicated from one individual to another; also, an infectious disease.
Inoculate.—To introduce any biological product directly into the tissues of the body.
Inoculation.—The process of inoculating.
Intestinal Tract.—The small and large intestines.
M
Microbe.—[See Germ.]
Micro-organism.—[See Germ.]
Mucus.—The substance secreted by mucous membranes.
Mucous Membranes.—The membranes lining certain cavities of the body, especially the digestive and respiratory tracts.