4880
We also demonstrated that fresh leukemic cells , whatever their stage of differentiation, as well as myelomonocytic cell lines , respond to VD by an increase in RXR alpha levels.
 leukemic cells, RXR alpha, myelomonocytic cell lines
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 leukemic cells, RXR alpha, myelomonocytic cell lines