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39 patients which underwent an IVF-ET procedure at the INPer were divided in two groups. To one of them, progesterone was administered since the day of oocyte retrieval (group I), whereas the other(More)
The factors that the human semen use to block the humoral immune response at the uterine cervix level are not known. This response is mainly represented by immunoglobulin A, secretory type (IgAs). A(More)