Fig. 4

Beclin 1 is required for mammary tumor recurrence in intact mice. (A) Primary tumor-free survival of female MTB/TAN; Beclin 1+/+(n = 38) and MTB/TAN; Beclin 1+/- mice (n = 40) administered doxycycline to induce HER2 beginning at 6 wk of age. (B) Recurrence-free survival of female MTB/TAN; Beclin 1+/+(n = 18) and MTB/TAN; Beclin 1+/- mice (n = 18) that harbored fully regressed primary tumors following doxycycline withdrawal. Median recurrence latencies are indicated