12735
Significantly increased oestrogen receptor expression , bcl-2 expression and numbers of CD8+ leukocytes were found in ectopic compared with eutopic endometrium in endometriosis , and CD56+ endometrial granulated lymphocytes (eGLs) were significantly reduced in ectopic endometrium .
 bcl-2, leukocytes, oestrogen 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:
 bcl-2, leukocytes, oestrogen receptor