437
Using a cell line that is stably transfected with a trimer of the NFAT -1 regulatory element linked to a lac-Z reporter gene , we screened for inhibitors of NFAT -1-mediated beta-galactosidase activity .
 NFAT, beta-galactosidase, NFAT, lac-Z reporter gene, NFAT -1 regulatory element
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:
 NFAT, beta-galactosidase, NFAT, lac-Z reporter gene, NFAT -1 regulatory element