hypoblast lineages, which develop into embryonic and extraembryonic tissues, respectively.
We conducted a chemical screen for regulators of epiblast identity in bovine Day 8
blastocysts. From the morula stage onward, in vitro fertilized embryos were cultured in the
presence of cell-permeable small molecules targeting nine principal signaling pathway
components, including TGFbeta1, BMP, EGF, VEGF, PDGF, FGF, cAMP, PI3K, and JAK …