| AGA | accelerated growth area; allergic granulomatosis and angiitis; American Gastroenterological Associat... |
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| AOA | American Osteopathic Association; Administration on Aging; Alpha Omega Alpha Honor Society; American... |
| ACP | accessory conduction pathway; acid phosphatase; acyl carrier protein; American College of Pathologis... |
| AAO | American Academy of Osteopathy; American Academy of Ophthalmology; American Academy of Optometry; Am... |
| ACA | abnormal coronary artery; acrodermatitis chronica atrophicans; acute cerebellar ataxia; adenocarcino... |
| American Red Cross | The national Red Cross society of the United States, established by Congress to assist in caring for the sick and wounded, serving as a communications link between members of the U.S. Armed forces and their families, conducting disaster relief and prevention programs, and furnishing other humanitarian services, the largest of which is a network of regional blood centres providing blood and blood products. (05 Mar 2000) |
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| american samoa | A group of islands of samoa, in the southwest central pacific. Its capital is pago pago. The islands were ruled by native chiefs until about 1869. An object of american interest beginning in 1839, pago pago and trading and extraterritorial rights were granted to the united states in 1878. The united states, germany, and england administered the islands jointly 1889-99, but in 1899 they were granted to the united states by treaty. The department of the interior has administered american samoa since 1951. (12 Dec 1998) |
| American tarantula | Eurypelma hentzii, the Arkansas tarantula; although greatly feared, its bite is relatively uncommon and harmless to humans. (05 Mar 2000) |
| American trypanosomiasis | Trypanosomiasis caused by Trypanosoma (or Schizotrypanum) cruzi and transmitted by certain species of reduviid (triatomine) bugs. In its acute form, it is seen most frequently in young children, with swelling of the skin at the site of entry, most often the face, and regional lymph node enlargement; in its chronic form it can assume several aspects, commonly cardiomyopathy, but megacolon and megaesophagus also occur; natural reservoirs include dogs, armadillos, rodents, and other domestic, domiciliated, and wild mammals. Synonym: Chagas' disease, Chagas-Cruz disease, Cruz trypanosomiasis. (05 Mar 2000) |
| American Type Culture Collection | <cell culture> A key resource for cultured cells, located in Rockville, USA. (12 Dec 1998) |
| pan american health organization | <organisation> WHO regional office for the americas acting as a coordinating agency for the improvement of health conditions in the hemisphere. The four main functions are: control or eradication of communicable diseases, strengthening of national and local health services, education and training, and research. (21 Jun 2000) |
| haemorrhagic fever, american | Diseases caused by american haemorrhagic fever viruses (tacaribe complex viruses). (12 Dec 1998) |
| south american blastomycosis | A chronic fungal infection caused by Paracoccidioides brasiliensis, characterised by primary pulmonary lesions with dissemination to many visceral organs. Common findings include ulcerative granuloma lesions to the buccal mucosa (inner lining of the cheek) and nasal mucosa that extend to the surrounding skin. Generalised lymphangitis is also typical. More commonly seen in South America and the tropics. (27 Sep 1997) |
| South American trypanosomiasis | Trypanosomiasis caused by Trypanosoma (or Schizotrypanum) cruzi and transmitted by certain species of reduviid (triatomine) bugs. In its acute form, it is seen most frequently in young children, with swelling of the skin at the site of entry, most often the face, and regional lymph node enlargement; in its chronic form it can assume several aspects, commonly cardiomyopathy, but megacolon and megaesophagus also occur; natural reservoirs include dogs, armadillos, rodents, and other domestic, domiciliated, and wild mammals. Synonym: Chagas' disease, Chagas-Cruz disease, Cruz trypanosomiasis. (05 Mar 2000) |
| North American blastomycosis | A fungal infection caused by Blastomyces dermatitidis. This rare fungal infection may produce inflammatory lesion of the skin or lungs or present as a disseminated disease to the skin, lungs, bones, liver, spleen and central nervous system. Uncommon unless patient is immunocompromised (AIDS). (27 Sep 1997) |
| indians, central american | An ethnic group belonging to the mongoloid racial stock in central america. This does not include mexican indians. (12 Dec 1998) |
| indians, north american | An ethnic group belonging to the mongoloid racial stock in north america. (12 Dec 1998) |
| indians, south american | An ethnic group belonging to the mongoloid racial stock in south america. (12 Dec 1998) |
| oil of American wormseed | Volatile oil from the fresh above ground part of the flower, American wormseed, Chenopodium ambrosioides, or C. Anthelminticum. Used as an anthelmintic. Synonym: oil of American wormseed. (05 Mar 2000) |
| French-American-British classification | <haematology> The classification of acute myeloid leukaemia on the basis of bone marrow and peripheral blood features. M0: Acute myeloid leukaemia with minimal evidence of myeloid differentiation. M1: Acute myeloblastic leukaemia. M2: Acute myeloblastic leukaemia with differentiation. M3: Acute promyelocytic leukaemia. M4: Acute myelomonocytic leukaemia. M5: Acute monocytic leukaemia. M6: Acute erythroleukaemia. M7: Acute megakaryocytic leukaemia. Acronym: FAB (07 Apr 1998) |