- An interation between two organisms attempting to use the same resource (nutrients, space, etc.)
Also known as (immunoglobulins), are gamma globulin proteins that are found in blood or other bodily fluids of vertebrates, and are used by the immune system to identify and neutralize foreign objects, such as bacteria and viruses.
A molecule not immunogenic by itself that, when coupled to a macromolecular carrier, can elect antibodies directed against itself.
SLOW VIRUS INFECTION
A progressive, pathological process virus that remains clinically silent during a prolonged incubation period of months to years after which progressive clinical disease becomes apparent
Persistent infections are characterized as those in which the virus is not cleared but remains in specific cells of infected individuals.
Persisting in tissue for long periods, during most of which there are no symptoms.
An antigen that effectively stimulates B-cell response only with the aid to T-helper cells that produce interleukin-2 and B-cell growth factor
Living microorganisms that are so small that they can be seen only with a microscope and that maintain a more or less constant presence in a particular area, e.g. the pharynx or the rumen. Includes bacteria, viruses, protozoa, fungi.
A tissue graft from one part of the body to another in the same individual. Also called an autotransplant
An antibody-mediated process in which IgG, IgM, and IgA antibodies bind to some viruses during their extracellular phase and inactivate or neutralize them.
The invasion of a host by a microorganism with subsequent establishment and multiplication of the agent. An infection may or may not lead to overt disease.
A localized infection with a collection of pus surrounded by an inflamed area.
Blood poisoning associated with persistence of pathogenic organisms or their toxins in the blood.
A localized protective response to tissue injury or destruction. Acute inflammation is characterized by pain, heat, swelling, and redness in the injured area.