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The GAE significantly promoted the initial neuronal differentiation from the stage I into the stage II and increased the indices of axonal and dendritic development such as the length , the numbers of primary processes , and branching frequencies by a minimum of twofold compared with the vehicle control .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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