Escherichia Universal in habitants of the intestinal tract Play nutritional role(synthesizing vitamins) Consume O2, render the large intestine anoxic Some are pathogenic Diarrhea Children’ s nurseries Urinary infections EnterotoxinEscherichia Universal inhabitants of the intestinal tract Play nutritional role (synthesizing vitamins) Consume O2, render the large intestine anoxic Some are pathogenic Diarrhea Children’s nurseries Urinary infections Enterotoxin