Scientists discover new antibiotic resistance gene

While sifting through the bacterial genome of salmonella, Cornell food scientists discovered mcr-9, a new, stealthy jumping gene so diabolical and robust that it resists one of the world's few last-resort antibiotics. Doctors deploy the antibiotic colistin when all other infection-fighting options are exhausted. But resistance to colistin has emerged around the globe, threatening its efficacy.
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