Tag : bee venom or pet dander — or a food that doesn't cause a reaction in most people. Your immune system produces substances known as antibodies.

एलर्जी

एलर्जी वह अवस्था है जहां व्यक्ति किसी एक पदार्थ के प्रति अति संवेदनशील हो जाता है ,जो अधिकांश व्यक्तियों के लिए और अहानिकारक होता...

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