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Activation and expression of the nuclear factors of activated T cells , NFATp and NFATc , in human natural killer cells : regulation upon CD16 ligand binding .
 protein: NFATp; protein: nuclear factors; cell type: human natural killer cells; cell type: activated T cells; protein: NFATc; protein: CD16
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: NFATp; protein: nuclear factors; cell type: human natural killer cells; cell type: activated T cells; protein: NFATc; protein: CD16