2704
Electrophoretic mobility shift assays indicate that MS-2beta and MS-2gamma interact with nuclear factors that are induced during U937 differentiation .
 protein: MS-2gamma; cell line: U937; protein: MS-2beta; protein: nuclear factors
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: MS-2gamma, U937, MS-2beta, nuclear factors 
Answer:
 protein: MS-2gamma; cell line: U937; protein: MS-2beta; protein: nuclear factors