2373
Sural nerve biopsy showed mild thickening of the perineurium , vascular alterations with inflammatory cell infiltration in the perineurium , and remarkable loss of large and small myelinated fibers .
 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