452
Thus , multiple myogenic factors that vary qualitatively and quantitatively may be responsible for the different and complex modulatory programs of actin gene expression observed during in vivo muscle differentiation .
 GENE: actin gene
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: actin gene