RPA1 and breast cancer: The results of the present study showed that both rLF and LeTx significantly (p < 0.01) reduced the proliferation of mammary tumor cells with mean inhibition indices of 28.0 ± 1.37 per cent and 19.6 ± 1.47 per cent respectively, however treatment with rPA alone had no statistically significant anti-proliferative effect as indicated by low mean inhibition index of 3.4 ± 3.87 percent (Figure 3).