2014
During both encephalopathy episodes , CSF protein and immunoglobulin G ( IgG ) levels were elevated without an increased IgG index or IgG synthesis rate .
 GENE: immunoglobulin G; GENE: IgG; GENE: IgG; GENE: IgG
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: immunoglobulin G; GENE: IgG; GENE: IgG; GENE: IgG