831
CA - MEK1 expression in growth cones was confined to individual dot - like structures ( arrowheads in Fig . 5D , F ) .
 Anatomy: growth cones
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: growth cones