5579
In contrast , p18 protein increased 50 - fold , from negligible levels in proliferating myoblasts to clearly detectable levels within 8 - 12 h of myogenic induction .
 myoblasts
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 myoblasts