Abnormally functioning immunocompetent cells in the endometrium are thought to be responsible for at least some cases of recurrent reproductive failure [recurrent miscarriage or recurrent in vitro fertilisation (IVF) failure], but their detailed investigation has been hampered by a lack of a standardised protocol of counting such cells in study or control patients.
The purpose of this study is to use a standardised protocol for the assessment of immune cells in the endometrial biopsies of a large cohort of women with recurrent reproductive failure and establish relevant reference ranges.