Assessment of Blood and Follicular Fluid Immune Cell Constitution in Patients Undergoing in Vitro Fertilization

Inclusion Criteria: * Age 27-43 years * Diagnosis of infertility due to endometriosis, severe male factor, tubal occlusion. * Patient undergoing IVF Exclusion Criteria: * Body mass index (BMI) \> 38 kg/m2 * Abnormal uterine cavity as evidenced by sonohysterogram or hysterosalpingography * Any current use of systemic steroid medication or any infertility treatment within 3 months of study enrollment. * Any contraindication to being pregnant and carrying a pregnancy to term. * Any ovarian or abdominal abnormality that may interfere with adequate TVS evaluation. * Absence of one or two ovaries * Clinically relevant systemic disease (e.g., Insulin-dependent diabetes, adrenal dysfunction, organic intracranial lesion, polycystic ovarian syndrome, hyperprolactinemia, or hypothalamic tumor) or serious illness (Neoplasia). * History (within past 12 months) or current abuse of alcohol or drugs. * Administration of any investigational drugs within three months prior to study enrollment. * Any medical condition that may interfere with the absorption, distribution, metabolism or excretion of the study drugs, gastrointestinal diseases, mal absorption syndromes and liver dysfunction * Unexplained gynecological bleeding. * Ejaculated sperm is not sufficient for ICSI * Patient not able to communicate adequately with the investigators and to comply with the requirements of the entire study. * Abnormal COH screening blood done for both partners, including: prolactin, thyroid stimulating hormone, HIV serology, Hepatitis B and C serology, Rubella, group and screen and syphilis serology prior to participation in study. * Unwillingness to give written informed consent. Previous entry into this study or simultaneous participation in another clinical trial.