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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...

white snakeroot

(Encyclopedia)white snakeroot, North American woods perennial (Eupatorium urticifolium) of the family Asteraceae (aster family), having a flat-topped cluster of small white flowers. It is of the same genus as the b...

Clostridium

(Encyclopedia)Clostridium, genus of gram-positive bacteria (see Gram's stain), several species of which cause significant, potentially deadly diseases in humans as a result of the toxins that each produces. Clostri...

Doyle, Sir Arthur Conan

(Encyclopedia)Doyle, Sir Arthur Conan kōˈnən, kŏnˈən [key], 1859–1930, British author and creator of Sherlock Holmes, b. Edinburgh. Educated at the Royal Infirmary in Edinburgh, he received a medical degree...

sage

(Encyclopedia)sage, any species of the large genus Salvia, aromatic herbs or shrubs of the family Labiatae (mint family). The common sage of herb gardens is S. officinalis, a strongly scented shrubby perennial, nat...

infectious canine hepatitis

(Encyclopedia)infectious canine hepatitis, acute viral disease of canines, especially dogs and foxes. The causative agent, an adenovirus, is not infectious to humans. In foxes the disease is manifested primarily as...

Hosack, David

(Encyclopedia)Hosack, David hŏsˈək [key], 1769–1835, American physician, surgeon, and author; for a time he was Samuel Bard's partner (see under Bard, John). He was an authority on the management of yellow fev...

eczema

(Encyclopedia)eczema ĕkˈsəmə [key], acute or chronic skin disease characterized by redness, itching, serum-filled blisters, crusting, and scaling. Predisposing factors are familial history of allergic disorders...

dermatitis

(Encyclopedia)dermatitis dûrˌmətīˈtĭs [key], nonspecific irritation of the skin. The causative agent may be a bacterium, fungus, or parasite; it can also be a foreign substance, known as an allergen. Contact ...

Bache, Benjamin Franklin

(Encyclopedia)Bache, Benjamin Franklin bāch [key], 1769–98, American journalist, b. Philadelphia; son of Richard Bache and grandson of Benjamin Franklin. In 1790 he founded the Philadelphia General Advertiser (l...