1233
In normal cells, the subsequent accumulation of nuclear c-Rel acts to inhibit its own continued production, indicating the presence of an autoregulatory loop .
 protein: nuclear c-Rel; protein: c-Rel
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: nuclear c-Rel, c-Rel 
Answer:
 protein: nuclear c-Rel; protein: c-Rel