Scientists have identified the gene responsible for Peutz-Jeghers syndrome, a rare autosomal inherited disease characterized by gastrointestinal polyps and an increased risk of various tumors. Mutations in the STK11 enzyme lead to its loss of function, triggering the development of polyps and cancer.
Purdue researchers have developed a new method for measuring the velocity of moving objects using lasers and semiconductors. By using an electronic strobe to make light appear to stand still, they can capture cleaner signals from moving objects, resulting in more accurate measurements of speed.
Researchers have discovered a unique enzyme in an AIDS-related skin disease virus that protects it from ultraviolet radiation and the immune system. The enzyme, similar to human glutathione peroxidase, neutralizes caustic chemicals made by immune cells to fight infection.