HEALTH BRIEFING:INFERTILE MEN may have a gene defect that takes away a protein that cloaks and protects sperm against a woman's immune system while travelling to the egg, according to a study that offers a new explanation for some male infertility.
Although the sperm from men with the gene variant look normal under a microscope, they are less able to move through a solution made to resemble human cervical mucus, researchers reported yesterday in Science Translational Medicine.