The best way to keep bacteria from doing any damage is to stop them in their tracks before they can start down their pathological road to destruction. Yiping Han, associate professor at the Case Western Reserve University School of Dental Medicine, aims to understand how to build roadblocks for a common bacterium that's harmless in a mother's mouth but can turn deadly when it reaches an unborn
Women who have a diminished number of eggs in their ovaries, either because they are older or for some other reason such as ovarian surgery, may be more at risk of a trisomic pregnancy than women with an ovarian reserve within the normal, fertile range. Trisomic pregnancies occur when the embryo has three copies of a chromosome rather than the normal two. The most common trisomy is Down's synd
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