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Colorized low-temperature electron micrograph of a cluster of E. coli bacteria. Individual bacteria in this photo are oblong and colored brown. As an alternative to using antibiotics for fighting E. coli infections in newborn and weaned pigs, scientists are finding promising results from introducing mixes of beneficial bacteria, obtained from other pigs, into the gut of young pigs.
Photo by Eric Erbe, Colorization by Christopher Pooley.