Along with soulful eyes, endearingly long necks and warm fuzzy coats, llamas have a far less appreciated feature: They make an array of immune system antibodies so tiny they can fit into crevices on the surface of an invading virus.
That feat could one day protect humans from entire families of flu viruses that bedevil scientists with their unpredictable and shape-shifting ways.
All, potentially, with a once-a-year puff up the nose.
