12839
Receptors for the Fc portion of immunoglobulin molecules ( FcR ) present on leukocyte cell membranes mediate a large number of cellular responses that are very important in host defense, including phagocytosis , cell cytotoxicity , production and secretion of inflammatory mediators , and modulation of the immune response .
 inflammatory mediators, Fc portion, FcR, immunoglobulin molecules
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:
 inflammatory mediators, Fc portion, FcR, immunoglobulin molecules