4425
Moreover, the combination of activated MAPKK-1 and Rac-1 could not substitute for activated p21ras and synergize with calcium signals to induce NFAT .
 p21ras, MAPKK-1, NFAT, Rac-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:
 p21ras, MAPKK-1, NFAT, Rac-1