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Picture by Rocky Mountain Laboratories/NIAID/NIH via Flickr Creative Commons.. Salmonella is the kind of microbe people make a particular effort to avoid. Long gone are the days of eating raw eggs. Instead we make sure they’re well cooked, even though we’re at it we triple-wash our spinach and handle raw chicken like a biohazard in your kitchen. But, as reported in a news feature in this month’s Nature Medicine, scientists are reworking Salmonella to be able to infiltrate the hard-to-reach centers of tumors. A press release from the University of Minnesota Masonic Cancer Middle in Minneapolis yesterday points to a clinical trial there in which scientists have built a weakened edition of the microbe that also bears the immune signaling substance interleukin-2 . According to the news release, “The salmonella IL-2 cocktail is blended with water and taken as a liquid.” Recruitment is ongoing.