6118
Animal age and sex had no significant effects on CSF composition , but serum IgG concentration increased with age .
 GENE: IgG
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: IgG 
Answer:
 GENE: IgG