| hansen disease | <infectious disease> Caused by Mycobacterium leprae, an obligate intracellular parasite that survives lysosomal enzyme attack by possessing a waxy coat. Leprosy is a chronic disease associated with depressed cellular (but not humoral) immunity, the bacterium requires a lower temperature than 37쵣 and thrives particularly in peripheral Schwann cells and macrophages. Only humans and the nine banded armadillo are susceptible. (18 Nov 1997) |
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| Hansen's bacillus | A species of gram-positive, aerobic bacteria that causes leprosy in man. Its organisms are generally arranged in clumps, rounded masses, or in groups of bacilli side by side. (12 Dec 1998) |
| Hansen's disease | <infectious disease> Leprosy is a chronic granulomatous infection of humans by the bacterium Mycobacterium leprae. Leprosy affects the superficial tissues, especially the skin and peripheral nerves. It is estimated that there are between 10 and 20 million persons affected with leprosy in the world. Leprosy is most common in tropical climates (even as close as Mexico), but quite rare in the United States. Ninety percent of the cases diagnosed in the U.S. Have occurred in immigrants from leprosy-endemic countries. Some sporadic reports of leprosy have come out of Hawaii and the Gulf Coastal areas of the U.S. (27 Sep 1997) |
| Hansen, Gerhard | <person> Norwegian physician, 1841-1912. See: Hansen's bacillus, Hansen's disease. (05 Mar 2000) |
| hansenula | Yeast-like fungi, of the family saccharomycetaceae, order endomycetales isolated from trees, bark beetles, fruit, and soil. (12 Dec 1998) |
| Fosdick-Hansen-Epple test | A test for determining dental caries activity based on a solution of powdered human enamel in a saliva-glucose-enamel mixture. (05 Mar 2000) |
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