12959
Fragmentation was not observed in ICR27TK.3 cells containing mutant glucocorticoid receptors ( L753F ) that are activation-deficient but retain the ability to repress AP-1 activity .
 L753F, AP-1, mutant glucocorticoid receptors, ICR27TK.3 cells
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:
 L753F, AP-1, mutant glucocorticoid receptors, ICR27TK.3 cells