has part has part has_part characteristic of has modifier embryo implantation abnormal embryo implantation failure of embryo implantation MPheno.ontology failure of implantation MP:0001728 inability of the blastocyst and/or the uterine environment to successfully synchronize allowing attachment of the blastocyst to the epithelial lining of the uterus, its penetration through the epithelium and any subsequent physiological interactions necessary to sustain embryonic development abnormal absent