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GATA - 3 , a transcription factor specifically expressed in T helper 2 ( Th2 ) cells , plays a critical role in the differentiation of Th2 cells from uncommitted CD4 + lymphocytes .
 T helper 2 ( Th2 ) cells, Th2 cells, CD4 + lymphocytes
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 T helper 2 ( Th2 ) cells, Th2 cells, CD4 + lymphocytes