13940
Using this RAR-selective antagonist , and RXR and RAR agonist , we demonstrate the RAR -mediated signaling pathway is important for differentiation and apoptosis of myeloid leukemic cells .
 protein: RAR; protein: RAR; cell type: myeloid leukemic cells; protein: RXR
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: RAR, RAR, myeloid leukemic cells, RXR 
Answer:
 protein: RAR; protein: RAR; cell type: myeloid leukemic cells; protein: RXR