Table 2. Cell proliferation index of HEC-1A cells treatment with the perifosine (10 μM, 30 μM, and 50 μM), vitamin D (50 nM and 200 nM) and combinations of both (10 μM + 50 nM, 10 μM + 200 nM, 30 μM + 50 nM, 30 μM + 200 nM, 50 μM + 50 nM, 50 μM + 200 nM).