21386
Challenge with nicotine triggered phosphorylation of the extracellular signal - regulated kinase ( ERK ) and the thymoma viral proto - oncogene ( Akt ) followed by activation of the mTORC1 - dependent p70 ribosomal S6 protein kinase .
 Chemical: nicotine
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: nicotine