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These results demonstrate that RXR-alpha has a role in mediating growth inhibition and cell adhesion during myelomonocytic differentiation , and suggest that different species of heterodimers involving RXR-alpha may control the acquisition of different features of mature monocyte/macrophage function .
 RXR-alpha, heterodimers, RXR-alpha
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:
 RXR-alpha, heterodimers, RXR-alpha