Researchers Uncover a Backup Defense System in the Gut
The immune system in our gut encounters a surge of foreign substances every day, whether it’s the food we consume or the microbes that find their way in. To keep things in check, specialized antibodies—known as immunoglobulin A (IgA)—form a protective mucosal barrier in the gut that traps and neutralizes pathogens, preventing them from sticking […]
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