8792
We examined the allele-specific expression of WT1 in cultured human fibroblasts from 15 individuals .
 protein: WT1; cell type: human fibroblasts
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: WT1, human fibroblasts 
Answer:
 protein: WT1; cell type: human fibroblasts