| NTA | 1) Naso-Tracheal Aspiration 2) National Tuberculosis Association |
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| NAPT | National Association for the Prevention of Tuberculosis |
| NMA | National Malaria Association; National Medical Association; neurogenic muscular atrophy; N-nitroso-N... |
| ADA | adenosine deaminase; American Dental Association; American Dermatological Association; American Diab... |
| AGA | accelerated growth area; allergic granulomatosis and angiitis; American Gastroenterological Associat... |
| united states national aeronautics and space administration | An independent federal agency established in 1958. It conducts research for the solution of problems of flight within and outside the earth's atmosphere and develops, constructs, tests, and operates aeronautical and space vehicles. (12 Dec 1998) |
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| los alamos national laboratory | <radiobiology> Major DOE research facility, located in Los Alamos, new Mexico, about an hour west of Santa Fe. Former home of a frozen-deuterium-fibre Z-pinch device, which was dismantled. Home to an active theory division, including the Numerical Tokamak Grand Challenge (being performed on the CM-5 massively-parallel supercomputer). Also home to former alternative-concepts experimental devices like Scyllac, FRX-A, FRX-B, FRX-C/LSM, ZT40, and the aborted CPRF which was killed in 1991 when it was almost complete (budget cuts). Currently there are some small in-house experiments, including one on electrostatic confinement as a possible fusion device, and/or a compact neutron source. They also do theory and experimental collaboration with other labs worldwide. (09 Oct 1997) |
| american dental association | Professional society representing the field of dentistry. (12 Dec 1998) |
| american heart association | A voluntary organization concerned with the prevention and treatment of heart and vascular diseases. (12 Dec 1998) |
| american hospital association | A professional society in the united states whose membership is composed of hospitals. (12 Dec 1998) |
| american medical association | Professional society representing the field of medicine. (12 Dec 1998) |
| american nurses' association | Professional society representing the field of nursing. (12 Dec 1998) |
| american speech-language-hearing association | A professional society concerned with the diagnosis, prevention, treatment, and remediation of speech, language, and hearing disorders. (12 Dec 1998) |
| association | 1. <neurology> Correlation involving a high degree of modifiability and also consciousness. 2. <genetics> The occurrence together of two or more phenotypic characteristics more often than would be expected by change. To be distinguished from linkage. 3. In dysmorphology, the nonrandom occurrence in two or more individuals of multiple anomalies not known to be a polytopic field defect, sequence or syndrome. Origin: L. Associatio (18 Nov 1997) |
| association areas | Generic term denoting the large expanses of the cerebral cortex that are not sensory or motor in the customary sense, but are involved in advanced stages of sensory information processing, multisensory integration, or sensorimotor integration. See: cerebral cortex. Synonym: association areas. (05 Mar 2000) |
| association constant | <chemistry> Reciprocal of dissociation constant. A measure of the extent of a reversible association between two molecular species at equilibrium. (18 Nov 1997) |
| association cortex | Generic term denoting the large expanses of the cerebral cortex that are not sensory or motor in the customary sense, but are involved in advanced stages of sensory information processing, multisensory integration, or sensorimotor integration. See: cerebral cortex. Synonym: association areas. (05 Mar 2000) |
| association fibres | Nerve fibre's interconnecting subdivisions of the cerebral cortex of the same hemisphere or different segments of the spinal cord on the same side. Synonym: endogenous fibres, intrinsic fibres. (05 Mar 2000) |
| association learning | The principle that items experienced together enter into a connection, so that one tends to reinstate the other. (12 Dec 1998) |
| association mechanism | The cerebral mechanism whereby the memory of past sensations may be compared or associated with present ones. (05 Mar 2000) |