compare the innate and adaptive responses to repeated challenge with the same antigen by sketching the immune response curve over time

Innate immunity is defined as the first line of defense against infections and faster than adaptive immunity while adaptive immunity is second or third line of defense mediated by the T and B lymphocytes.

Adaptive immunity forms memory cells for the same antigen while innate immunity do not.

As shown in the graph below, when an antigen enter in the body for the first time, our immune system response with innate immunity and response immediately with several symptoms such as sneezing, swelling or redness et-cetra. Then after few days adaptive immunity forms which is mediated by the T and B lymphocytes by forming against the antigen.

Now if the body exposed to the same antigen again (Secondary exposure), the immune system shows amplified response as it has already formed memory cells against the antigen.

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