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We found that ALD induce a transient activation of protein kinase ( PKC ) but have no effect (in comparison to anti-CD3 antibodies ) on protein tyrosine phosphorylation nor on PCL gamma 1 tyrosine phosphorylation .
 PKC, protein kinase, anti-CD3 antibodies
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:
 PKC, protein kinase, anti-CD3 antibodies