The study of microorganisms. The science which treats the nature, life and action of microorganisms.
The state of being soiled or infected by contact with infectious organisms or other material
A unit of measurement; 1/1000 of a millimeter or 1/25,000 of an inch; usually designated by the Greek letter "u".
Describes all living materials in a cell. A thick mucous-like substance that is colorless and translucent that forms the biochemical basis of life within the cell nucleus.
The process by which some cells can ingest bacteria or other foreign particles. (process where white blood cells in the human body destroy bacteria by engulfing them).
Deoxyribonucleic Acid. The protein found in the chromosomes of a cell nucleus which is the basis of heredity..
Mycobacterium tuberculosis (which causes tuberculosis) and Mycobacterium leprae (which cause leprosy).
Microrganisms capable of forming a thick wall around themselves enabling them to survive in adverse conditions; a resistant form of bacterium.
A molecule in plants that absorbs sunlight, and converts it to energy in a process called photosynthesis.
State of active growth of microorganisms (as apposed to the resting or spore stages)
The typical method of bacterial reproduction in which a cell divides into equal parts.
Methicillin-Resistant Staphylococcus Aureus (MRSA)
Staphylococcus aureus bacteria that have developed a resistance to Methicillin, the drug of choice.
Vancomycin-Resistant Enterococcus (VRE)
Enterococcus bacteria that are no longer sensitive to Vancomycin.
The crawling movement of cells brought about by the cell successively becoming longer and then retracting.
A large group of plant-like organisms including molds, mushrooms, and yeasts without chlorophyll.
Reservoir of agent (chain of infection)
The place where an infectious agent (microorganism) can survive.
An individual who harbors and disseminates specific pathogenic microorganisms without manifesting any clinical symptoms, and who serves as an intermediary in the transfer of diseases to a susceptible person.
Mode of transmission (chain of infection)
The method of transfer of an infectious agent from the reservoir to a susceptible host.
Portal of entry (chain of infection)
The path used by an infectious agent to enter a susceptible host.