2191
We concluded that activation of c - fosER mediated transcriptional inhibition of p21 ( Cip1 / WAF1 ) through a previously uncharacterized AP - 1 site , revealing an important role for c - fos in negative control of cell cycle regulatory genes .
 GENE: c - fosER; GENE: p21; GENE: Cip1; GENE: WAF1; GENE: AP - 1 site; GENE: c - fos
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: c - fosER; GENE: p21; GENE: Cip1; GENE: WAF1; GENE: AP - 1 site; GENE: c - fos