14654
The induced differentiation occurs with down-regulation of c-fos protein and an accompanying up-regulation of RB protein expression , consistent with a possible need for up-regulated RB expression to maintain a given differentiated phenotype and suppress transcriptional activators that might typically be associated with proliferation.
 protein: RB protein; protein: transcriptional activators; protein: c-fos protein; protein: RB
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: RB protein, transcriptional activators, c-fos protein, RB 
Answer:
 protein: RB protein; protein: transcriptional activators; protein: c-fos protein; protein: RB