The nature of the human embryo: The pre-implantation phase, an open debate

Abstract

This article wants to show the complexity of the issue of the status of the embryo at the preimplantation stage. To do this, are discussed systematically different reasons behind the nesting position and fertilization position. These reasons are so foundational that we must continue to maintain an open dialogue.

Keywords

• embrión, anidación, fecundación, diálogo.