The upper GI tract is a series of connected, living organs.

"The GI tract has a nervous system of its own, just like the brain," she says.

Just remember that all antibiotics can have an effect on the normal flora of your GI tract.

But we haven't done a thing about the GI tract yet.

In reality, most people clear their GI tract within three days.

The boy was too weak to vomit now, but blood issued from the other end of his GI tract.

On the other hand, many people have this organism living in their GI tract but they don't get an ulcer.

Although all are present in the lining of the GI tract, serotonin is particularly important.

Has a tumor in the GI tract, liver, or brain.

"We would control bleeding and any contamination from the GI tract," he said.