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T lymphocytes from 6 of the 14 patients also exhibited an increased expression of the dual specificity phosphatase , map kinase phosphatase-1 ( MKP-1 ).
 T lymphocytes, specificity phosphatase, MKP-1, map kinase phosphatase-1
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 lymphocytes, specificity phosphatase, MKP-1, map kinase phosphatase-1