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Renin studies performed in 34 hypertensive patients and in a control group of 11 recipients showed that elevation of plasma renin activity and of plasma aldosterone level is frequent but difficult to interpret , particularly when a renal artery stenosis is observed .
 GENE: Renin; GENE: plasma renin
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: Renin, plasma renin 
Answer:
 GENE: Renin; GENE: plasma renin