18445
Its maximum tolerated , abnormal toxicity , allergic , and hemorrhagin doses were 80U / kg , 1U , 2U , and 50U , respectively , whereas those of Reptilase or Agacutin were 35U / kg , 0 . 25U , 0 . 25U , and 0 . 2U , respectively .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
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