A glove to prevent premature birth

Changes to the microbiological equilibrium in the female genital tract can lead to obstetric complications. In the current issue of the Deutsches Ärzteblatt International (Dtsch Arztebl Int 2011; 108[6]: 81𔃄), the working group around Eva-Ma…

Sperm Use Heat Sensors to Find the Egg

Much like guided missiles that sense the heat of a plane?s engine, sperm are guided to the fertilization site by temperature, reports a study published in the current issue of Nature Medicine. The site where the egg lies is slightly warmer than the place where the sperm make a pause in their journey through the female genital tract. Sperm cells are apparently guided by this temperature difference in their navigation. Such a temperature-driven mechanism was previously known to exist in microorganisms and worms, but the Weizmann study for the first time has provided evidence for its existence in sperm cells.