15013
Previously , we have showed that lead acetate ( Pb ) elicits EGFR activation to initiate the SFK / PKC alpha / Ras / Raf - 1 / MKK1 / 2 / ERK signaling cascade functioning against genotoxicity .
 Chemical: lead acetate; Chemical: Pb
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: lead acetate; Chemical: Pb