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Vitamin E deficiency impairs the somatostatinergic receptor - effector system and leads to phosphotyrosine phosphatase overactivation and cell death in the rat hippocampus .
 Chemical: Vitamin E; Chemical: phosphotyrosine
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: Vitamin E; Chemical: phosphotyrosine