20091
To explore the neurodevelopmental defects and the underlying mechanism associated with MeHg exposure , the cerebellum and cerebrum of Wistar rat pups were analyzed by [ ( 18 ) F ] FDG PET functional imaging , field potential analysis , and microarray gene expression profiling .
 Chemical: MeHg; Chemical: [ ( 18 ) F ] FDG
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: MeHg; Chemical: [ ( 18 ) F ] FDG