UMLS. CSP-HL7-ICD9CM-NCI-NDFRT-RXNORM
%
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
R R R- R0 R1 R2 R3 R4 RA RB RC RD RE RF RG RH RI RK RM RN RO RP RQ RR RS RT RU RV RW RX RY
RA RA- RA4 RAB RAC RAD RAE RAF RAG RAI RAL RAM RAN RAP RAR RAS RAT RAU RAV RAY RAZ

radon

[naturally radioactive element with atomic symbol Rn, atomic number 86, and atomic weight 222; a member of the noble gas family, released during the decay of radium and found in soil; there is a link between exposure to radon and lung cancer. ( CSP )]
UMLS (NCI) C0034629
 
Hazardous or Poisonous Substance
Element, Ion, or Isotope
Relation/PAR: gas element
radioisotope


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