Search on: NITROGEN 
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Descriptor English:   Nitrogen 
Descriptor Spanish:   Nitrógeno 
Descriptor Portuguese:   Nitrogênio 
Tree Number:   D01.268.604
D01.362.625
SP4.011.097.063.939
Definition English:   An element with the atomic symbol N, atomic number 7, and atomic weight [14.00643; 14.00728]. Nitrogen exists as a diatomic gas and makes up about 78% of the earth's atmosphere by volume. It is a constituent of proteins and nucleic acids and found in all living cells. 
See Related English:   Nitrogen Isotopes
Nitrogen Radioisotopes
 
Allowable Qualifiers English:  
AD administration & dosage AE adverse effects
AG agonists AN analysis
BL blood CF cerebrospinal fluid
CH chemistry CL classification
DF deficiency EC economics
HI history IM immunology
IP isolation & purification ME metabolism
PK pharmacokinetics PD pharmacology
PH physiology PO poisoning
RE radiation effects ST standards
SD supply & distribution TU therapeutic use
TO toxicity UR urine
Record Number:   9769 
Unique Identifier:   D009584 

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