21. A product of the congenital defect in the metabolic pathway where tryptophan is converted to kynurenine. 22. Industrial pollution can also lead to congenital defects . 23. Other causes may include elective euthanasia because of congenital defects or failure to meet breed standards. 24. Reproductive problems would include such things as infertility, spontaneous abortion, congenital defects , stillbirths and infant death. 25. Others result from congenital defects in an artery. 26. On April 5, Courtney came through with flying colors after a heart operation to correct congenital defects . 27. I was born with a congenital defect , 28. Amber had spina bifida, a congenital defect of the spine, and used a walker and a wheelchair. 29. Afflicted with spina bifida _ a congenital defect of the vertebrae _ Adside was born with no legs. 30. This capability provides rehabilitative support to patients with acquired or congenital defects of the head and neck region.