Severe Combined Immunodeficiency (SCID): A genetic disorder in which affiicted individuals have no functional immune system and are prone to infections. Both the cell-mediated immune response and the antibody-mediated response are absent.

 

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Severe Combined Immunodeficiency (SCID): A genetic disorder in which affiicted individuals have no functional immune system and are prone to infections. Both the cell-mediated immune response and the antibody-mediated response are absent.

Severe Thunderstorm: A thunderstorm with winds measuring 50 knots (58 mph) or greater, 3/4 inch hail or larger, or tornadoes. Severe thunderstorms may also produce torrential rain and frequent lightning.

Simian Immunodeficiency Virus (SIV): A virus that is found, in numerous strains, in primates.

Severe Weather: Generally, any destructive weather event, but usually applies to localized storms, such as blizzards, intense thunderstorms, or tornadoes.

National Severe Storms Laboratory (NSSL): A branch of the National Oceanic and Atmospheric Administration, it provides accurate and timely forecasts and warnings of hazardous weather events, especially flash floods, hail, lightning, . . . View Full Definition

Combined Financial Statement: A strategy in which a put and call with the same strike price and expiration are either both bought or both sold. Related: Straddle

Human Immunodeficiency Virus (HIV): The retrovirus that attacks T-cells in the human immune system, destroying the bodys defenses and allowing the development of AIDS.

National Severe Storms Forecast Center (NSSFC): As of October 1995, the responsibilities of this Center were divided into two branches, the Storm Prediction Center and the Aviation Weather Center.

Acquired Immunodeficiency Syndrome (Aids): A collection of disorders that develop as a result of infection by the human immunodeficiency virus (HIV), which attacks helper T cells, crippling the immune system and greatly reducing the . . . View Full Definition