5576
During induced myogenesis , p21 and its associated CDK proteins underwent an initial increase followed by a decrease as cells became terminally differentiated .
 Anatomy: cells
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
 Entities: cells 
Answer:
 Anatomy: cells