12734
These studies investigate the relationship between leukocyte populations , steroid hormone receptor expression , proliferative activity , bcl-2 expression and apoptosis in eutopic and ectopic endometrium from women with endometriosis or adenomyosis at different phases of the menstrual cycle .
 ( protein: steroid hormone receptor, None) , ( protein: bcl-2, None) , ( cell type: leukocyte populations, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: steroid hormone receptor, None) , ( protein: bcl-2, None) , ( cell type: leukocyte populations, None) 