Donald N. Langenberg, a physicist and past president of the American Association for the Advancement of Science who led the University System of Maryland to national renown, died Jan. 25 at his home in Dickeyville, Md. He was 86.
Researchers have created a retrievable, wire-like device, tested in pigs, that safely resides in the stomach and releases large dosages of tuberculosis drugs over several weeks. The technology could help patients comply with TB treatment.
