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DeCS
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Descriptor English:
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Actinium
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Descriptor Spanish:
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Actinio
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Descriptor Portuguese:
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Actínio
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Tree Number:
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D01.268.271.100.033
D01.268.556.025
D01.552.020.042
D01.552.544.025
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Definition English:
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Actinium. A trivalent radioactive element and the prototypical member of the actinide family. It has the atomic symbol Ac, atomic number 89, and atomic weight 227.0278. Its principal isotope is 227 and decays primarily by beta-emission. |
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Indexing Annotation English:
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naturally radioactive; IM
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Allowable Qualifiers English:
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Record Number:
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29313
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Unique Identifier:
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D000186
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Occurrence in VHL:
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Similar:
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DeCS CID-10 SciELO LILACS LIS
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