Figure 5From: Characterization of protein marker expression, tumorigenicity, and doxorubicin chemoresistance in two new canine mammary tumor cell linesTumor growth curves of DTK-E and DTK-SME cells in tumorigenicity tests. Cells were subcutaneously injected into nude mice and monitored for 8 weeks. The tumor volumes were estimated every 2 weeks and calculated, and the data are expressed as the mean ± SE.Back to article page