Crohn's disease (CD) and ulcerative colitis (UC) - inflammatory diseases of the gastrointestinal tract - have puzzled the scientific community for decades. Ten years ago, researchers recognized that both genes and the environment contributed to these diseases but knew little about precisely how and why illness occurred. To begin to narrow in on the key pathways involved, they would need thousands of patients' samples, millions of data points, and the commitment of physicians and scientists at dozens of institutions...
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