blastocyst

• Substantivo que designa o blastocisto, estágio inicial do desenvolvimento embrionário dos mamíferos placentários, caracterizado pela diferenciação das células em massa celular interna e trofoblasto externo.

A noun referring to the blastula of a placental mammal, characterized by the early differentiation of cells into an inner cell mass and an outer trophoblast layer.

1. Early embryonic structureC1formalmedical

   A structure formed in the early development of mammals, consisting of a hollow ball of cells with an inner cell mass that will develop into the embryo.

   Blastocisto

   • The blastocyst implants into the uterine wall about a week after fertilization.
   • In IVF, the embryo is typically transferred at the blastocyst stage.
   • The inner cell mass of the blastocyst gives rise to the fetus.