Category: N
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Nutritional supplement
A preparation that supplies additional nutrients or active compounds to the body that may not be obtained by the normal diet. Products intended to supplement the body’s nutritional requirements. Nutritional supplements include vitamins, minerals, herbal products, and dietary aids. They are sold without prescription and are sometimes advertised as providing miraculous benefits, such as curing…
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Non-protein amino acids (NPAAs)
Secondary metabolites that are analogues of proteinogenic amino acids; if incorporated into proteins, the latter are usually inactivated.
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Neurovesicle
Small vesicles in the presynapse that are filled with neurotransmitters.
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Naturopathy
A holistic system of healing that emphasises the body’s inherent power of regaining balance and harmony. A holistic, preventive therapy emphasising the body’s natural vitality and potential for self-healing. Encourages a healthy lifestyle, encompassing a natural, organic diet, relaxation, exercise and hydrotherapy. A health practitioner who attributes disease to an imbalance of the natural forces…
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Nuciform
Nut-shaped.
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Netted-veined
When the veins branch and anastomose, forming a net-work.
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Net
A complex venation pattern of major and minor veins that form a network or reticulum.
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Neuroprotection
A compound is neuroprotective if it preserves the structure and function of brain cells, for example by preventing oxidation and inflammation, actions that are also fundamental to maintaining the health of plants and the animals that consume them. Also important is countering protein deposits from cellular degeneration that occur naturally in the aging brain (and…
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Nurse logs
In old-growth forests, these are ancient downed trees that rot so slowly that they themselves become the fundus and growth media for new and growing trees and other life-forms.
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Nitrogenous
A compound or molecule that contains nitrogen; in my context, a substance that is or was a part of protein metabolism. To or containing nitrogen. Foods that contain nitrogen are the proteins; those that do not contain nitrogen are the fats and carbohydrates. The retention of nitrogenous waste products such as urea in the blood…