3143
Abnormal neural crest migration is coincident with aberrant expression of foxd3 and sox10 , two genes previously suggested to play key roles during neural crest development , including migration , differentiation and the maintenance of progenitor cells .
 None
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:  
Answer:
 None