803
The presence of STAT-1 in the nuclear extract was studied by electrophoretic mobility shift assay .
 protein: STAT-1
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: STAT-1 
Answer:
 protein: STAT-1