Fitness basics
Learning Center
Video: Radiofrequency ablation of the esophagus
This video animation shows use of radiofrequency energy in treatment (ablation) of Barrett's esophagus and esophageal cancer.
Video: Cryotherapy of the esophagus
Cryotherapy video shows use of extreme cold treatment for Barrett's esophagus and esophageal cancer.
Video: Allergy tests
What happens in an allergy test? Watch this video and find out.
Video: What happens during obstructive sleep apnea?
Sleep apnea — Watch this video to see how snoring and obstructive sleep apnea occur.
Video: How CPAP controls sleep apnea
See how CPAP can keep you breathing easy if you have sleep apnea.
Video: Carotid angioplasty and stenting
Carotid angioplasty and stenting — See how this stroke treatment is done.
Video: Barium enema
See what to expect during an X-ray examination of your colon.
Video: Smoking — Anatomy of nicotine addiction
This animation illustrates how smoking changes your brain, causing nicotine addiction.
Video: Cornea transplant
Video shows how full-thickness and partial-thickness cornea transplants are performed.
Video: Mitral valve repair surgery
Watch this video to see how doctors do mitral valve repair surgery.
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