| Treatment | N | Total cells | Oct-4 positive cells | % Oct-4/Total cells |
---|
PA
| Control | 3 | 163 | 129 | 79 |
 | BMP4 | 3 | 180 | 142 | 79 |
 | Noggin | 2 | 115 | 84 | 73 |
IVF
| Control | 3 | 275 | 229 | 83a |
 | BMP4 | 3 | 324 | 235 | 72b** |
 | Noggin | 3 | 256 | 185 | 72b** |
- Oct-4 expression in PA and IVF blastocysts. Embryos were cultured with 100 ng/ml of either BMP4 or Noggin, Controls were cultured without supplementation. Different superscripts indicate statistical differences, 'Difference of proportions test' **p < 0.01.