bacteria

(Newser) - Clinical depression may be treatable with bacteria, doctors at Bristol University posit. They got the idea when they observed lung cancer patients inoculated with harmless Mycobacterium vaccae who showed reduced symptoms and improved mental health. The brain produces serotonin as an immune response, the docs hypothesized, raising the low serotonin...

(Newser) - Bacterial infections could be diagnosed in moments with the use of glowing polymers developed by British scientists. The designer molecules are made to identify bacteria, bind to it, and then change shape, causing them to emit light that would give the wound a glow that's discernible to the naked eye...