4453
Cytokines that bind to the interleukin-2 ( IL-2 ) receptor common gamma chain ( gamma c ), including IL-2 , IL-4 , IL-7 , IL-9 , and IL-15 , are important for the growth and differentiation of T and B lymphocytes , natural killer cells , macrophages , and monoctyes .
 interleukin-2, macrophages, Cytokines, interleukin-2 ( IL-2 ) receptor common gamma chain, IL-4, monoctyes, gamma c, IL-9, natural killer cells, IL-7, IL-2, IL-15, IL-2
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:
 interleukin-2, macrophages, Cytokines, interleukin-2 ( IL-2 ) receptor common gamma chain, IL-4, monoctyes, gamma c, IL-9, natural killer cells, IL-7, IL-2, IL-15, IL-2