12190
Different thermoluminescent detectors ( TLD ) have been used to measure the contribution of the low linear energy transfer component ( LET < 10 keV / micrometer ) and plastic nuclear track detectors ( PNTD ) for the high linear energy tranfer ( LET ) component .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
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