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These results suggest that chemotherapy - induced anemia reduces cytotoxicity of cyclophosphamide in tumors , whereas correction of anemia by rHuEPO treatment ( epoetin alpha ) increases the sensitivity , probably as a result of an improved oxygen supply to tumor tissue .
 Disease: anemia; Disease: cytotoxicity; Chemical: cyclophosphamide; Disease: tumors; Disease: anemia; Chemical: oxygen; Disease: tumor
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: anemia; Disease: cytotoxicity; Chemical: cyclophosphamide; Disease: tumors; Disease: anemia; Chemical: oxygen; Disease: tumor