3852
Contrast radiography appears to be an especially inaccurate method to document PUD in CF because the duodenal mucosa typically appears nodular and distorted with poor definition of the mucosal folds .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None