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By Elizabethe Holland Durando, Washington University School of Medicine Scientists believe babies are born with digestive systems containing few or no bacteria. Their guts then quickly become colonized by microbes — good and bad — as they nurse or take bottles, receive medication and even as they are passed from one adoring relative to another. However, in infants born prematurely, researchers at Washington University School of Medicine in St. Louis have found that the population...
- The navel or umbilicus.
- In Greek archaeology: A central boss, as on a shield, a bowl, etc.