Table 4.
*The same letters indicate nonsignificant difference between groups based on Tukey's multiple comparison test.
ATP-CRA, adenosine triphosphate-based chemotherapy response assay; 5-FU, 5-fluorouracil; IHC, immunohistochemical stain; ER, estrogen receptor; PR, progesterone receptor; HER-2, human epidermal growth factor receptor 2.