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Acute eosinophilic leukemia ( AEL ) is a rare subtype of acute myeloid leukemia with 50 to 80 percent of eosinophilic cells in the blood and marrow .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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