8187
This RXR agonist activity is blocked by RAR -specific antagonists , suggesting extensive cross-talk between the partners of the RXR -RARalpha403 heterodimer .
 protein: -RARalpha403; protein: RAR; protein: RXR; protein: RXR; protein: RXR -RARalpha403 heterodimer
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: -RARalpha403, RAR, RXR, RXR, RXR -RARalpha403 heterodimer 
Answer:
 protein: -RARalpha403; protein: RAR; protein: RXR; protein: RXR; protein: RXR -RARalpha403 heterodimer