Search on: NITROGEN RADIOISOTOPES 
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Descriptor English:   Nitrogen Radioisotopes 
Descriptor Spanish:   Radioisótopos de Nitrógeno 
Descriptor Portuguese:   Radioisótopos de Nitrogênio 
Tree Number:   D01.496.586.520
D01.496.749.615
Definition English:   Unstable isotopes of nitrogen that decay or disintegrate emitting radiation. N atoms with atomic weights 12, 13, 16, 17, and 18 are radioactive nitrogen isotopes. 
Indexing Annotation English:   N-12, 13, 16, 17, 18; NIM; /blood-csf-urine /metab permitted but not for tracer studies ( = /diag use)
History Note English:   75 
Allowable Qualifiers English:  
AD administration & dosage AE adverse effects
AG agonists AN analysis
BL blood CF cerebrospinal fluid
CH chemistry CL classification
CT contraindications DU diagnostic use
EC economics HI history
IM immunology IP isolation & purification
ME metabolism PK pharmacokinetics
PD pharmacology PO poisoning
RE radiation effects ST standards
SD supply & distribution TU therapeutic use
TO toxicity UR urine
Record Number:   9775 
Unique Identifier:   D009590 

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