Question

14.प्रतिरक्षी संरचना के आधार पर अस्थिर भाग व स्थिर भाग में अन्तर समझाइए।
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Answer 1

Answer:

Any substance that causes the body to make an immune response against that substance. Antigens include toxins, chemicals, bacteria, viruses, or other substances that come from outside the body. Body tissues and cells, including cancer cells, also have antigens on them that can cause an immune response