14888
Antisera obtained from horses immunized with C . durissus terrificus crude venom were able to recognize and neutralize not only the toxins presents in C . durissus terrificus , but also the ones present in the venoms from C .
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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:
 None