Genomic Endometrial Expression in Obesity

Determine if different genomic endometrial expression exists during embryo implantation in obese women in comparison with non obese women.

Inclusion Criteria:

• group A: non obese oocyte donors (BMI: 18 - 29 kg. /m2)with proven fertility
• group B: obese oocyte donors: (BMI: >29 kg./m2)with proven fertility
• group C: obese (BMI: >29 kg./m2) infertile patients,

Exclusion Criteria:

• recurrent miscarriage