Figure 2.

Mammary tumor growth is enhanced in D3H1 and D3H2LN bioluminescent sublines of MDA-MB-231 cells. Cells were injected into the mammary fat pad of (a) nude or (b) nude-beige mice, and mean tumor volumes were determined by caliper measurements over time. The tumors from the bioluminescent sublines D3H1 and D3H2LN were also monitored using in vivo imaging, and the correlation between mean photons/s and mean tumor volume are indicated as R² values.