Columbia Encyclopedia

Search results

500 results found

agranulocytosis

(Encyclopedia)agranulocytosis əgrănˌyəlōsītōˈsis [key], disease in which the production of granulated white blood cells by the bone marrow is impaired. Although the disease may occur spontaneously it is usu...

tularemia

(Encyclopedia)tularemia to͞olərēˈmēə [key] or rabbit fever, acute, infectious disease caused by Francisella tularensis (Pasteurella tularensis). The greatest incidence is among people who handle infected wild...

ehrlichiosis

(Encyclopedia)ehrlichiosis ârlĭkēōˈsĭs [key], any of several diseases caused by rickettsia of the genera Ehrlichia and Anaplasma. Ehrlichiosis is transmitted by ticks. Both human forms tend to develop about n...

communicable diseases

(Encyclopedia)communicable diseases, illnesses caused by microorganisms and transmitted from an infected person or animal to another person or animal. Some diseases are passed on by direct or indirect contact with ...

cryptosporidium

(Encyclopedia)cryptosporidium krĭpˌtōspərĭdˈēəm [key], genus of protozoans having at least four species; they are waterborne parasites that cause the disease cryptosporidiosis. One of the species appears to...

chikungunya

(Encyclopedia)chikungunya chĭkən-go͞onˈyä [key], viral disease transmitted by the bite of an infected female Aedes mosquito. Symptoms appear after an incubation period of four to eight days and include sudden ...

Parkinsonism

(Encyclopedia)Parkinsonism: see Parkinson's disease. ...

chancroid

(Encyclopedia)chancroid: see sexually transmitted disease. ...

clubroot

(Encyclopedia)clubroot, disease of cabbages, turnips, radishes, and other plants belonging to the family Cruciferae (or Brassicaceae; mustard family). It is induced by a plasmodial slime mold that attacks the roots...

Houghton, Michael

(Encyclopedia)Houghton, Michael, 1949–, Canadian biochemist, Ph.D. King's College, London, 1977. He joined G.D. Searle & Co. in 1977, then became (1982) a researcher at the Chiron Corp. In 2007 Houghton was a...