1402
MEK1 was significantly decreased also after a single injection of METH , but to a much lesser degree than after multiple injections of METH .
 Chemical: METH; Chemical: METH
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: METH; Chemical: METH