2872
We suggest that such distinct distributions of ChAT ( + ) vs . AChE ( + ) cells in the inner half retina provide graded distributions of ACh , which can direct cell differentiation and network formation .
 Chemical: ACh
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: ACh