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Potential explanations for the large number of non - detectable samples for TCDD include the small sample volume and young age of the subjects .
 Anatomy: samples; Anatomy: sample
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Anatomy: samples; Anatomy: sample