30438
No signs of oxidative inactivation of PREP , and no correlation with the endogenous PREP inhibitor , identified as activated alpha - 2 - macroglobulin ( alpha 2M * ) , were observed in any of the patients studied .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None