1822
RESULTS : The binding of 99mTc d , 1 - HMPAO to human placenta ranged from 2 . 95 % + / - 1 . 5 % to 5 . 82 % + / - 0 . 3 % per 1 ml standard solution .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
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