refers to a condition in which the tissue wall of an organ becomes
Immunodiffusion (AGID): a test
detect and measure antigen or antibody levels in tissues.
Antigenic drift: in terms of a virus, refers to a genetic mutation coding for a new protein (antigen) that allows the virus to escape neutralization by the host immune system, eventually leading to development of a new type (serotype) of that virus.
Ataxia: incoordination of the limbs.
Dyspnea: refers to labored or difficult breathing.
Enzyme Linked Immunosorbatant Assay (ELISA): a test used to detect and measure antigen or antibody levels in tissues.
similar to antigenic drift. Occurs as a result of a mutation of the
genome of the virus.
Incubation period: the time between when an animal is infected with the virus and the point when they start to show signs of being sick.
an inflammatory condition of the udder in which the udder becomes hard and infiltrated with
(a type of white blood cell).
transmission of an
infectious agent between animals at any period after birth.
Lentivirus: is a genus of slow viruses of the Retroviridae family characterized by a long incubation period.
Lymphadenopathy: refers to a problem involving the lymph nodes.
Non-suppurative encephalitis: inflammation of the brain that does not involve the build up of pus.
Necropsy: examination of a body following death to determine the cause of death.
Appendicular: refering to the limbs.
Oncogenic: giving rise to tumors or causing tumor formation.
Paralysis: loss of movement of a part of the body.
PCR: polymerase chain reaction; a test used to detect viral DNA.
Proliferative arthritis: inflammation of the joint involving hyperplasia (growth) of the synovial membrane, which lines the inside of the joint capsule.
refers to an animal's
its movements and the position of it's body.
paralysis of all four limbs.
Retroviridae: the family of enveloped retroviruses.
Seropositive: refering to a positive result on a test used to detect antigen or antibody. eg. ELISA.
Strains: refers to viral isolates that have been characterized.
Vertical transmission: transmission of an infectious agent from the mother to the fetus during pregnancy.