OCT4 and SOX2 primers were based on primers specific for Homo sapiens primers. The sequences of these genes were blasted against horse nucleotide sequences that have 95% and 94% coverage with the coding sequence of Equus caballus. BMP4 primers were designed on a bovine sequence that has 91% coverage with the coding sequence of Equallus equa. STAT3, GATA4, -tubulin III, and α-fetoprotein primers have been applied by Li et al. [12].