4689
Three new alpha - KTx peptides were found and called MegKTx1 , MegKTx2 and MegKTx3 ( M . gibbosus , K ( + ) channel toxin number 1 - 3 ) .
 Chemical: K ( + )
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: K ( + )