18609
Moreover , VEGF is expressed in the adult brain in a region - specific manner and in distinctive spatial patterns incompatible with an angiogenic role ( see below ) , strongly suggesting angiogenesis - independent and possibly also perfusion - independent functions .
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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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