3647
Thus , IF - laser therapy has a certain antioxidative effect by increasing SOD activity in RA patients ' blood cells and reducing the production of highly reactive oxygen and nitrogen forms .
 GENE: SOD
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: SOD