"Backwalling" is not good for the embryo.
Payson
Mark
M
Armstrong
Alicia
A
D004624:Embryo Transfer / Q000009:adverse effects; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D016896:Treatment Outcome; D014463:Ultrasonography; D014599:Uterus / Q000000981:diagnostic imaging*