25895
By " working upwards " from mTOR , we observed that TCDD inhibited endogenous and IGF - I - induced AKT and ERK activation by interfering with tyrosine phosphorylation of insulin receptor substrate 1 .
 Chemical: TCDD; Chemical: tyrosine
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: TCDD; Chemical: tyrosine