6355
We have recently demonstrated that hydrocortisone and other glucocorticoids inhibit reactive oxygen species ( ROS ) generation by mononuclear (MNC) and polymorphonuclear leucocytes ( PMNL ).
 PMNL
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:
 PMNL