2979
The signaling of both Sox9 and Runx2 , key regulators of chondrogenesis , was downregulated by VPA .
 Chemical: VPA
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: VPA 
Answer:
 Chemical: VPA