11543
Cell - mapping studies in wild - type mice revealed that Pitx3 is primarily expressed in the ventral SN , a region particularly susceptible to MPTP and other dopaminergic neurotoxins .
 Chemical: MPTP
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: MPTP