If reflux occurs frequently, stomach acids can erode the protective lining of the esophagus.

Researchers compared the stomach linings of different species to study evolutionary adaptations.

After catching the stomach flu, she spent two days resting and drinking clear fluids.

During the winter, several students missed classes because of stomach flus.

She drank the bitter tonic on an empty stomach and regretted it immediately.

Researchers collected stomach oils from several seabirds to analyze their diet.

After eating the spicy curry, I had a sour stomach and couldn't sleep.

After the workout, she counted thirty stomach crunches before taking a break.

During the haunted house tour, sudden screams made cold dread settle into the pits of the stomach.

When one remembers the details of the crash, one can feel sick to one's stomach.