11985
The gamma(c) subunit can be employed in receptor complexes for IL -2 , -4 , -7 , -9 , and -15 , and the multiple signaling defects that would result from a defective gamma(c) chain in these receptors are proposed to cause the severe phenotype of X-SCID patients .
 receptor complexes, gamma(c) chain, gamma(c) subunit
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:
 receptor complexes, gamma(c) chain, gamma(c) subunit