Figure 1

Schematic scheme, demonstrating increasing pregnancy/delivery rates and declining cumulative pregnancy/delivery rates with lengthening embryo culture. The figure demonstrates with prolonged embryo culture increasing pregnancy/delivery rates per embryo transfer (white bars), and declining cumulative pregnancy/delivery rates for whole embryo cohorts (black bars). This discrepancy, likely, reflects the loss of potentially viable embryos with normal pregnancy/delivery potential during prolonged embryo culture. For further detail see text.