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Here , we have studied the venom of the Moroccan scorpion Buthus occitanus Paris ( BoP ) in order to find new peptides , which could enlarge our structure - function relationship knowledge on the Kv1 . 3 blocker Kaliotoxin ( KTX ) that belongs to the alpha - KTx3 . 1 family .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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