Besides, many plants have pointed, microscopic structures called raphides and silica needles within their tissues. While toxins induce immediate pain, the pathophysiology of injected pathogenic ...

This zone typically resides about 5,000 feet above the surface. Close up of snow needles on car (KXAN photo/Todd Bailey) Snow needles seen in Austin (Courtesy Gregory Phillips) Snow needles appear ...

With human trials on the horizon, this could revolutionize vaccination—topical, painless, and highly effective. Imagine a world where getting vaccinated is as simple as rubbing a cream onto your ...

NEW ORLEANS — Mike Pereira made his way to a chair waiting for him inside a meeting room at the Convention Center here Thursday when he began to laugh at the crowd of media waiting for him.