1391
Pre-incubation with clomiphene or tamoxifen which are estrogen receptor antagonists, eliminated the inhibitory effect of 17 beta- estradiol on the chemotaxis of PMNs , restoring it to the control level.
 ( cell type: PMNs, 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:
 ( cell type: PMNs, None) 