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The aim of the present study was to investigate the effects of doxorubicin in Hct - 116 human colon carcinoma cells in order to clarify if a time / concentration range for optimal doxorubicin - induced apoptosis exists .
 Hct - 116 human colon carcinoma cells
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Hct - 116 human colon carcinoma cells