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( A , B ) Overexpression of CA - MEK1 ( B ) reduces mean neurite length compared to a control GFP - expressing neuron ( A ) .
 Anatomy: neurite; Anatomy: neuron
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Anatomy: neurite; Anatomy: neuron