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Study unearths sophisticated year-round corn-growing system in ancient Bolivian AmazonBy Liz Kimbrough Between 600 and 1,500 years ago, Indigenous people of the seasonally flooded savannas in the Bolivian Amazon ...
They also have a sophisticated plumbing system in the form of a three-part protein complex – MacAB-TolC – that spans the cell’s inner and outer membranes, as well as the periplasm that connects them.
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