Female NCR-NU mice (Taconic, six–seven weeks old) were maintained and treated under pathogen-free conditions. MDA-MB-231 cells (1 × 106 cells/mouse) were injected subcutaneously to female NCR-NU mice. The injected mice were maintained under standard humane conditions. Tumor volume (V) was measured with calipers periodically and calculated by using formula V = 0.5 × LW2 (L, Length; and W, width). Mice were euthanized after 30–40 days. Tumors were removed, weighed and photographed.
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