Electron Microscopy- an imaging method, which uses a focused beam of electrons to enlarge the image of an object on a screen or photographic plate.
Endocytosis- the process in which cells take in fluids or other large molecules.
Enzyme- a type of protein, which catalyzes the reactions between substrates (substances).
Filovirus- The thread-like virus family which includes such viruses as Ebola and Marburg; very deadly.
Genes- a sequence of DNA or RNA that is located on a chromosome and that is the functional unit of inheritance controlling the transmission of traits and function of other genetic material.
Glycoprotein- a compound produced by mixing a protein with any member of a carbohydrate group.
Helper T cells- coordinate the actual immune response of the body; they let other T cells and B cells do their jobs.
Hemorrhagic fever- a condition characterized by non-stop internal or external bleeding resulting from a viral infection which has caused blood vessel damage.
Hereditary material - material responsible for the transmission of qualities from ancestor to descendant through genes.
Host- a living organism, which provides subsistence or lodgment to a parasite.
Humoral immune response- the immune responses mediated by antibodies.
Inactivated vaccine- dead microorganisms used as antigens to produce immunity.
Inclusion bodies- strange and unusual structures found inside a host cell during virus replication.
Infection- the state produced by the presence of an infective agent in or on a suitable host.
Immune System- A body function designed to defend the body from disease causing microorganisms.
Immunity- the condition of being immune, the protection against infectious disease.
Latent infection- viral infection in which the virus responsible is able to avoid the hosts immune system and defenses.
Leukocytes- the majority of the specialized cells used in the immune system; white blood cells.
Lipid- a fatty and oily compound used by cells as energy reserves and material for structure.
Lymph nodes- small bean-shaped organ made up large numbers of lymphocytes, macrophages and accessory cells located along the lymphatic system.
Lymphoid tissue- tissue made up white blood cells and special fibers.
Lysis- the cell membrane of a host is completely destroyed and newly replicated viruses are unleashed instantaneously.