1075
In stage I , histochemistry for copper was positive in 11 out of 21 cases : 6 cases were T + ; 1 case R + and 2 cases O + ; 2 cases were T + , R + , O + .
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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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