1643
Furthermore , vitamin E deficiency significantly increased phosphotyrosine phosphatase activity and PTP eta expression , as well as PKC delta activation , and decreased extracellular - signal - regulated kinase phosphorylation .
 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