Mutations in the VWF gene cause von Willebrand disease. The VWF gene provides instructions for making a blood clotting protein called von Willebrand factor, which is essential for the formation of blood clots.ype 3 is the most severe and rarest form of the condition. The four subtypes of type 2 von Willebrand disease are intermediate in severity. Another form of the disorder, acquired von Willebrand syndrome, is not caused by inherited gene mutations.
A vaporizer or vaporiser (a âvapeâ) is a device used to vaporize the active ingredients of plant material, commonly cannabis, tobacco, or other herbs or blends for the purpose of inhalation. However, they can also be filled with a mixture of propylene glycol, glycerin, and nicotine. (e.g. tobacco-free nicotine).
9 Investigates drug use in schools using vape pens. ORLANDO, Fla. - 9 Investigates learned local teens are using a convenient and secretive device to get high in drug-free zones such as our local high schools. The so-called âvape pensâ make drug use very hard to spot. In fact, one teenager told Channel 9's Vanessa Welch the devices hide the scent so well he was able to smoke concentrated marijuana in the middle of his classroom. Videos of people blowing vapor rings are all over Vine and YouTube.