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Nonverbal Communication Psychology : Davis, John M.  2011 1
 

Noonan Syndrome -- See Also Neurofibromatosis 1


An autosomal dominant inherited disorder (with a high frequency of spontaneous mutations) that features developmental changes in the nervous system, muscles, bones, and skin, most notably in tissue derived from the embryonic NEURAL CREST. Multiple hyperpigmented skin lesions and subcutaneous tumors are the hallmark of this disease. Peripheral and central nervous system neoplasms occur frequently, especially OPTIC NERVE GLIOMA and NEUROFIBROSARCOMA. NF1 is caused by mutations which inactivate the NF1 gene (GENES, NEUROFIBROMATOSIS 1) on chromosome 17q. The incidence of learning disabilities is also elevated in this condition. (From Adams et al., Principles of Neurology, 6th ed, pp1014-18) There is overlap of clinical features with NOONAN SYNDROME in a syndrome called neurofibromatosis-Noonan syndrome. Both the PTPN11 and NF1 gene products are involved in the SIGNAL TRANSDUCTION pathway of Ras (RAS PROTEINS).
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Nootropic -- See Nootropic Agents


Drugs used to specifically facilitate learning or memory, particularly to prevent the cognitive deficits associated with dementias. These drugs act by a variety of mechanisms.
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Nootropic Agent -- See Nootropic Agents


Drugs used to specifically facilitate learning or memory, particularly to prevent the cognitive deficits associated with dementias. These drugs act by a variety of mechanisms.
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Nootropic Agents : Group, David.  2001 1
Nootropic Agents Popular Works : Perlmutter, David,  2004 1
 

Nootropic Drug -- See Nootropic Agents


Drugs used to specifically facilitate learning or memory, particularly to prevent the cognitive deficits associated with dementias. These drugs act by a variety of mechanisms.
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Nordic Countries -- See Scandinavian and Nordic Countries


NORWAY; SWEDEN; DENMARK; ICELAND; and FINLAND.
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Norfolk Island -- See Melanesia


The collective name for the islands of the Pacific Ocean northeast of Australia, including NEW CALEDONIA; VANUATU; New Hebrides, Solomon Islands, Admiralty Islands, Bismarck Archipelago, FIJI, etc. Melanesia (from the Greek melas, black + nesos, island) is so called from the black color of the natives who are generally considered to be descended originally from the Negroid Papuans and the Polynesians or Malays. (From Webster's New Geographical Dictionary, 1988, p748 & Room, Brewer's Dictionary of Names, 1992, p344)
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Normal Range -- See Reference Values


The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality.
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Normal Values -- See Reference Values


The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality.
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North America   5
North America Adolescent : Pagliaro, Louis A.  2012 1
North America Animals Poisonous : Ernst, Carl H.  1992 1
North America Baths : Bruchac, Joseph,  1993 1
North America Birds   3
North America Ceremonial Behavior : Bruchac, Joseph,  1993 1
North America Child : Pagliaro, Louis A.  2012 1
North America Cross Cultural Comparison   2008 1
North America Delivery Of Health Care   2008 1
North America Disease Outbreaks 18th Century : Duffy, John,  1953 1
North America Economics Popular Works : Taylor, David A.,  2006 1
North America Ethnicity   2008 1
North America Ethnicity Popular Works : Rodriguez, Richard,  1992 1
North America Ethnobotany Dictionary English : Moerman, Daniel E.  2009 1
North America Ethnobotany Encyclopedias English : Moerman, Daniel E.  1998 1
North America Herbal Medicine : Hutchens, Alma R.  1991 1
North America Indians North American   3
North America Indians North American Dictionary English : Moerman, Daniel E.  2009 1
North America Indians North American Encyclopedias English : Moerman, Daniel E.  1998 1
North America Indigenous Peoples North American   3
North America Indigenous Peoples North American Dictionary English : Moerman, Daniel E.  2009 1
North America Indigenous Peoples North American Encyclopedias English : Moerman, Daniel E.  1998 1
North America Lizards : Ernst, Carl H.  1992 1
North America Maps : National Geographic Society (U.S.)  1985 1
North America Medicine Traditional   3
North America Mescaline History : Stewart, Omer Call,  1987 1
North America Panax Popular Works : Taylor, David A.,  2006 1
North America Pharmaceutical Preparations : Pagliaro, Louis A.  2012 1
North America Phytotherapy : Cichoke, Anthony J.  2001 1
North America Plants Medicinal   3
North America Plants Medicinal Dictionary English : Moerman, Daniel E.  2009 1
North America Plants Medicinal Encyclopedias English : Moerman, Daniel E.  1998 1
North America Plants Medicinal Handbooks : Foster, Steven,  2000 1
North America Plants Medicinal Popular Works : Taylor, David A.,  2006 1
North America Religion And Medicine : Bruchac, Joseph,  1993 1
North America Rhizome Popular Works : Taylor, David A.,  2006 1
North America Snakes : Ernst, Carl H.  1992 1
North America Spiritual Therapies : Cichoke, Anthony J.  2001 1
North America Substance Related Disorders : Pagliaro, Louis A.  2012 1
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