Fig. 1From: Progesterone receptor blockade in human breast cancer cells decreases cell cycle progression through G2/M by repressing G2/M genesDetermination of cell viability by MTT assay. T47D cells were hormone-starved for 24 h and treated for 24, 48, and 72 h with (a) P4 ± TPA, (b) MPA ± TPA, (c) R5020 ± TPA alone, or in combination with E2 (d, e, and f). Cells were also treated with E2 ± TPA (g). Vehicle treated cells were used as a control. X-axis: 24, 48, and 72 h time points. p-values for the various comparisons are provided in Additional file 2: Table S1Back to article page