10961
Despite increasing evidence that the outcome of many diseases is determined by the ratio of the two subsets of CD4(+) T helper cells , Th1 and Th2 , the molecular basis for Th1- and Th2- specific gene expression remains to be elucidated.
 Th2, Th1, CD4(+) T helper cells
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:
 Th2, Th1, CD4(+) T helper cells