What leech gut bacteria can tell us about drug resistance
These microbes were exposed to surprisingly tiny amounts of antibiotics
![leech](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2018/07/072418_LR_leech_feat.jpg?fit=860%2C460&ssl=1)
BLOODSUCKER Medicinal leeches like this contain bacteria in their guts that can be transferred to humans. In some cases, it only takes a small exposure to antibiotics for those bacteria to become drug resistant.
Karl Ragnar Gjertsen/Wikipedia Commons (CC BY 2.5)