Reproduction is a fundamental process for the preservation of the human species. This
process requires a sequence of orchestrated events that are necessary for a successful …

BACKGROUND The human uterine endometrium undergoes significant remodeling and
regeneration on a rapid and repeated basis, after parturition, menstruation, and in some …

Embryo implantation involves the intimate interaction between an implantation-competent
blastocyst and a receptive uterus, which occurs in a limited time period known as the …

At implantation, with the acquisition of a receptive phenotype in the uterine epithelium, an
initial tenuous attachment of embryonic trophectoderm initiates reorganisation of epithelial …

Approximately half of all human embryo implantations result in failed pregnancy. Multiple
factors may contribute to this failure, including genetic or metabolic abnormalities of the …

OBJECTIVE: To provide a focused review of the scientific literature pertaining to endometrial
receptivity. DESIGN: Review of the literature and appraisal of relevant articles. SETTING …

Labeled problem Embryo implantation remains the main limiting factor in assisted
reproductive medicine (20% success rate). Methods of study An endometrial immune …

The implantation of the blastocyst and early development of the placenta are crucial for the
success of implantation and pregnancy. However, the formative stages of human placental …

BACKGROUND Implantation and early embryo development are finely regulated processes
in which several molecules are involved. Evidence that thyroid hormones (TH: T4 and T3) …

The steroid hormone progesterone (P), acting via the progesterone receptor (PR) isoforms,
PR‐A and PR‐B, exerts a profound influence on uterine functions during early gestation. In …