3148
The truncated fos protein that contains only part of the central region is not phosphorylated in chicken embryo fibroblasts , indicating that phosphorylation of the fos protein is not necessary for the transforming activity .
 Anatomy: embryo fibroblasts
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Anatomy: embryo fibroblasts