You know all those dang bacteria in your body, living there without permission, without even one of the 3.9 x 1013 of them offering to contribute to rent? Turns out about 1 in 9 of those freeloaders can neutralize gemcitabine, a pancreatic cancer drug, before it gets to work on cancer cells. While that means killing those bacteria results in a non-inhibited drug delivery, it’s not a great solution. Not only do some cancer drugs depend on the presence of other, benign microbes in your body, but using antibiotics could lead to resistance in those bacteria. And the only thing worse than bacteria-filled tumors are antibiotic-resistant bacteria-filled tumors. Hey, at least now we know what the problem is.