1088
Furthermore, we show that retinoic acid can also induce apoptosis in these cells through the retinoic acid receptor , whose repressive functions but not target site specificity, are similar to those of the glucocorticoid receptor .
 glucocorticoid receptor, retinoic acid receptor
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:
 glucocorticoid receptor, retinoic acid receptor