The mosquito-borne virus that causes West Nile fever. One of the flaviviruses, a family of viruses also responsible for dengue, yellow fever, and tick-borne encephalitis virus. Like the other flaviviruses, the West Nile virus is a positive-strand RNA virus containing three structural proteins and a host-derived lipid bilayer. The West Nile virus is an icosahedral structure of about 500 angstroms in diameter. The overall structure of the West Nile virus most closely resembles that of dengue fever virus but the surface proteins are slightly different, which may give West Nile virus some of its unique features.
- West syndrome
Infantile spasms, a seizure disorder of infancy and early childhood with the onset predominantly in the first year of life of myoclonic seizures, hypsarrhythmia (abnormal, chaotic electroencephalogram), and mental retardation. The spasms are sudden, brief contractions of one or more muscle groups, and may be followed by a longer (less than 10 seconds) tonic phase. […]
- Western blot
A technique in molecular biology that is used to separate and identify particular proteins.
- Western medicine
Conventional medicine, as distinct from an alternative form of medicine such as ayurvedic or traditional Chinese medicine.
- Wet market
A live animal market, a common sight in many areas of the world and a source of influenza viruses and other infectious disease agents for human beings. SARS outbreaks have been traced to wet markets in southern China. Wet markets sell live poultry, fish, reptiles, and mammals of every kind. Animals may stay from days […]
Medical shorthand for white female.