Efficacy of KM100 and/or MTX in BALB/c mice bearing subcutaneous TUBO tumors. Efficacy of KM100 and/or MTX in BALB/c mice bearing subcutaneous TUBO tumors. A, a total of 5 × 105 TUBO cells were implanted into BALB/c mice by subcutaneous injection into the left flank. Palpable tumors were treated with 2 × 107 total pfu of KM100 and/or 5 μmol/L MTX (6.5 mg/kg) administered intratumorally three times every 36 hours. Tumors were measured every 3 days for 40 days or until the tumors reached endpoint. B, Kaplan–Meier estimates of survival of BALB/c mice bearing subcutaneous tumors after different treatments. The statistical significance of the survival differences was analyzed using log-rank (Mantel–Cox). C, fold changes in tumor volumes following various treatments. Fold changes are calculated relative to the day 0 tumor volume. The data are pooled from two independent experiments carried out at different times. **, P < 0.005. Samuel T. Workenhe et al. Cancer Immunol Res 2013;1:309-319 ©2013 by American Association for Cancer Research