“…40 These changes occurring at a genetic level are thought to be implicated in overcoming the observed asynchrony of the endometrium and embryo stage in repeated IVF implantation failures, following COH. 13,17,69 The Neoangiogenesis Theory Typically, trauma stimulates angiogenesis. 54 An induced injury can provide an enhanced angiogenic environment, enriched with cytokines and growth factors, known to be crucial for a normal trophoblast invasion and retention of the embryo.…”