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By using Jurkat and primary human T lymphocytes , we demonstrate that the simultaneous activation of two second messengers of the TCR -initiated signal transduction , protein kinase C ( PKC ) and calcineurin , results in the synergistic activation of the IkappaBalpha kinase (IKK) complex but not of another putative IkappaBalpha kinase , p90(rsk) .
 IkappaBalpha, TCR, putative IkappaBalpha kinase, calcineurin, Jurkat, T lymphocytes, p90(rsk), PKC, IkappaBalpha kinase (IKK) complex, IkappaBalpha, primary human T lymphocytes, protein kinase C
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:
 IkappaBalpha, TCR, putative IkappaBalpha kinase, calcineurin, Jurkat, T lymphocytes, p90(rsk), PKC, IkappaBalpha kinase (IKK) complex, IkappaBalpha, primary human T lymphocytes, protein kinase C