1389
The agent, 17 beta- estradiol , but not 17 alpha- estradiol , significantly reduced PMNs chemotaxis to FMLP in a dose-dependent manner (control vs estrogen 10(-10)-(-6) M, P < 0.05).
 PMNs
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:
 PMNs