14894
Interaction between protein kinase C ( PKC )- and glucocorticoid receptor ( GR )-mediated signaling is suggested by the ability of the PKC activating phorbol ester 12-O-tetradecanoylphorbol-13-acetate ( TPA ) to inhibit GR -dependent transcription of the mouse mammary tumor virus ( MMTV ) long terminal repeat ( LTR ).
 PKC, LTR, protein kinase C, GR, long terminal repeat, glucocorticoid receptor, PKC, GR
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, LTR, protein kinase C, GR, long terminal repeat, glucocorticoid receptor, PKC, GR