17530
Interestingly , GFAP expression remained elevated in rats exposed to METH at PND60 ( METH : Saline ) , and was not elevated further in resistant rats treated for the second time with METH ( METH : METH ) .
 Chemical: METH; Chemical: METH; Chemical: METH
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: METH, METH, METH 
Answer:
 Chemical: METH; Chemical: METH; Chemical: METH