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South Dakota State University

(Encyclopedia)South Dakota State University, at Brookings; land-grant support; coeducational; chartered 1883 as Dakota Agricultural College, opened 1884. In 1907 it became South Dakota State College of Agriculture ...

Ebola virus

(Encyclopedia)Ebola virus ēbōˈlə [key], a virus of the genus Ebolavirus, which belongs to a family (Filoviridae) of RNA viruses that cause hemorrhagic fevers. The viruses, named for a river in Congo (Kinshasa) ...

cystic fibrosis

(Encyclopedia)cystic fibrosis sĭsˈtĭk fībrōˈsĭs [key], inherited disorder of the exocrine glands (see gland), affecting children and young people; median survival is 25 years in females and 30 years in males...

gene therapy

(Encyclopedia)gene therapy, the use of genes and the techniques of genetic engineering in the treatment of a genetic disorder or chronic disease. There are many techniques of gene therapy, all of them still in expe...

amyotrophic lateral sclerosis

(Encyclopedia)amyotrophic lateral sclerosis (ALS) āˌmīətrōfˈik, sklĭrōˈsĭs [key] or motor neuron disease, sometimes called Lou Gehrig's disease, degenerative disease that affects motor neurons in the brai...

Zika virus

(Encyclopedia)Zika virus zēˈkə [key], single-stranded RNA virus of the genus flavivirus that infects human and primates and causes a disease known as Zika fever or zika. It is primarily transmitted by the bite o...

Gibbon, Edward

(Encyclopedia)Gibbon, Edward, 1737–94, English historian, author of The History of the Decline and Fall of the Roman Empire. His childhood was sickly, and he had little formal education but read enormously and om...

dandruff

(Encyclopedia)dandruff, excessive flaking of skin from the scalp, apparent as dry or greasy diffuse scaling with variable itching. It is the sign of a skin disease, such as seborrhea or a fungal infection. Treatmen...

delusion

(Encyclopedia)delusion, false belief based upon a misinterpretation of reality. It is not, like a hallucination, a false sensory perception, or like an illusion, a distorted perception. Delusions vary in intensity,...

equine encephalitis

(Encyclopedia)equine encephalitis ēˈkwīn ĕnsĕfˌəlīˈtĭs [key], infectious disease of horses caused by any of several viruses, three of which—the Eastern, Western, and Venezuelan viruses—can also infect...