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- HIV Medicines (National Library of Medicine)... INSTIs), block an enzyme called integrase Protease inhibitors (PIs) block an enzyme called protease Some types of ...
- Irritable Bowel Syndrome (National Library of Medicine)Irritable bowel syndrome (IBS) is a problem that affects the large intestine. It can cause abdominal cramping, bloating, and a change in bowel habits. Some people ...