5638
Snakebite envenoming by Bothrops caribbaeus , an endemic viperid from the Lesser Antillean island of Saint Lucia , is clinically characterized by local tissue damage and systemic thrombosis that can lead to cerebral , myocardial or pulmonary infarctions and venous thromboses .
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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:
 None