Figure 5From: PreImplantation Factor (PIF) correlates with early mammalian embryo development-bovine and murine modelsMicrophotographs of individually cultured viable and non-viable bovine IVF embryos. It shows a representative group of bovine embryos cultured from the 6-cell to blastocyst stage, which were used to determine PIF levels in their culture medium as well a non- cleaving embryo, control.Back to article page