Definition of blastocyst in English:



  • A mammalian blastula in which some differentiation of cells has occurred.

    • ‘The outer trophoblast cells of the released blastocyst begin to invade the epithelium, burrowing into the underlying endometrial stroma.’
    • ‘Many scientists believe blastocysts - stem cells taken from days-old embryos - have much greater potential.’
    • ‘The fundamental question concerns the nature of the blastocyst from which stem cells are derived.’
    • ‘Adult stem cells were injected into a mouse blastocyst, an early embryonic stage of a mouse.’
    • ‘You had mentioned that twins can develop when the inner cell mass splits in the blastocyst and forms two embryos enclosed in a common trophoblast.’