4331
Histological evaluation revealed a more than twofold increase in the number of interepithelial mononuclear cells ( p less than 0 . 005 ) , while the number of epithelial cells / 100 microns of villous mucosa and the mean height of the epithelial cells were comparable in both groups .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 None