1670
In the absence of c - fos gene expression , c - Fos protein appears to be replaced by proteins of Fos family ( Fra - 1 ) and ATF family ( ATF - 2 and ATFa ) .
 GENE: c - fos gene; GENE: c - Fos protein; GENE: Fos family; GENE: Fra - 1; GENE: ATF family; GENE: ATF - 2; GENE: ATFa
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 - fos gene; GENE: c - Fos protein; GENE: Fos family; GENE: Fra - 1; GENE: ATF family; GENE: ATF - 2; GENE: ATFa