Understanding the biology of reproductive organs is essential for the development of
assisted reproductive techniques. There is at present no direct evidence for either the
concentration and dynamics of intrauterine oxygen tension at the endometrial surface, nor its
importance for the receptiveness of the endometrium. In this study a new method measured
mid-cycle (ranging from day 12–18) endometrial surface oxygen tension in 21 patients
referred to intrauterine insemination (IUI). Time series was measured online for a period of 5 …