Category: N
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Neurotensin
A blood-borne cytokine that is an appetite suppressant. A peptide containing 13 amino acids that is produced by cells of the brain and the small intestine. It is released after the consumption of fats and acts both as a neurotransmitter with psychostimulant properties and as a peripheral hormone that stimulates colonic motility, pancreatic and biliary…
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Neoplastic diseases
Proliferative disorders characterized by an uncoordinated and uncontrolled growth of cells.
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Neonatal jaundice
An accumulation of bilirubin under the skin of the newborn infant giving the infant a yellowish hue. A condition observed in neonates wherein the liver is insufficiently mature to process bilirubin, resulting in its accumulation within the bloodstream. Newborn babies may exhibit a yellow tint in their skin and the whites of their eyes due…
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Neonatal hemorrhaging
Excessive blood loss by the neonate.
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N-corrected metabolizable energy (MnE)
Metabolizable energy corrected for total nitrogen (TN) retained or lost from tissues: MnE = ME – (κ x TN). For birds or monogastric animals, gaseous energy loss is usually not considered. The correction for mammals is generally k = 7.45 kcal/g nitrogen retained in the body tissues (TN). The factor of 8.22 kcal/g TN is used…
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Naturally occurring toxicants
Products of the metabolic processes of animals, plants, and microorganisms from which the food products are derived.
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Nationwide food consumption survey
Data collected by scientists in the U.S. Department of Agriculture to document the kinds and amounts of food consumed in the United States.
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National science foundation
A U.S. government funding organization for the basic sciences.
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National center for health statistics
An agency that collects data on the causes of death and disease in the United States as well as in other countries. A branch of the Centers for Disease Control and Prevention that gathers and analyzes a broad array of data about the health of Americans.
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Napthaquinone
A derivative of quinone that has some vitamin K activity.