It all began in the years 1990s with a chance discovery at the Free University of Brussels: students used dromedary blood in an experiment and they came across previously unknown antibodies. The university scientists discovered that these smaller antibodies (also known nanobodies) are present in all camel species and, in time, scientis have discovered they have amazing properties. Small fragments can separate from the base of the antibody -- without causing any damage and while retaining their full binding capacity.
A nanobody can attach itself with extremely high precision to pathogenic antigens and this discovery triggered a wave of innovations and shook up the big pharmaceutical companies. In the year 2018 the first drug based on nanobodies went on the market ad it was designed to combat an autoimmune blood clotting disorder. Because of their special properties these nanobodies can be used in a variety of ways, whether in the fight against infectious diseases, in cancer therapy or in the diagnosis of Alzheimer's disease but humans still have issues with bacteria that are immune to antibiotics.
At least we have that problem for now because of evolution (bateria evolution in this case). Some day the scientists will most probably solve it but I don't know if it will be on another mistake or they will invent something usefull like the nanorobots.
