12905
We propose that direct inhibition of K+ channels in T cells by progesterone contributes to progesterone -induced immunosuppression .
 T cells, K+ channels
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:
 T cells, K+ channels