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Infectious bacteria have evolved through the loopholes in almost every drug we've created, thanks to our own misuse and overuse. But we may yet outmaneuver them. Researchers are testing new bug-killers that bypass the molecular pathways used by old-school antibiotics—and maybe won't produce the same kind of resistance. Once more unto the breach, dear friends!
Alligator Blood 
Alligators heal fast, rarely get infections, and survive in murky water on diseased food. Researchers at McNeese State University in Louisiana believe that proteins in their blood inhibit bacterial growth. If so, similar proteins may help mammals.
Bacterial DNA 
A team at the University of Warwick employed genome mining (analysis of controlled genetic tweaks) to isolate a previously unknown signaling chemical in Streptomyces bacteria that causes the bugs to produce natural antibiotics.
Chlorine 
A derivative of N-chlorotaurine made by NovaBay Pharmaceuticals mimics an immune system chemical similar to chlorine, which messes with bacterial proteins. The drug is in trials for treating urinary tract infections.
Clay 
At least three different kinds of clay, two from the US and one from France, seem to have antibacterial effects. So, you know: That's weird. Scientists at Arizona State University aim to figure out whether it can be used in medicine.
Lasers and Dye 
Hit indocyanine green dye with a laser and it becomes lethal to the critters that cause staph infections, scarlet fever, and other nasty diseases. Researchers in London say the technique could be used to sterilize wounds.
Viruses 
Bacteriophages are viruses that attack and eat bacteria. Boston University researchers recently engineered some to penetrate and dissolve the slimy protective walls, or biofilms, around antibiotic-resistant superbug colonies.
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Zero-Gravity Bacterial Behavior Hints at Disease-Busting Hacks
