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Four variants of changes in the thyroid status , characteristic of children with different variants of nephrotic syndrome were distinguished: 1) biochemical signs of primary hypothyroidism , 2) biochemical signs of secondary hypothyroidism , 3) low content of T3, 4) dysfunction of the hypophyseal and thyroid system .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 None