Answer :
Final answer:
Vaccines activate adaptive immunity by introducing weakened pathogens, leading to antibody production and long-term immunity through memory cells.
Explanation:
Vaccines help activate adaptive immunity by introducing weakened or inactivated pathogens to stimulate the immune system. This exposure triggers the production of antibodies, allowing the body to fight off future infections effectively.
Artificial active immunity through vaccination is essential for preventing diseases by creating memory cells specific to pathogens. Memory cells play a crucial role in mounting a strong secondary response upon re-exposure to the pathogen.
Exposure to antigens through immunization results in the formation of memory T and B cells, providing long-term immunity against pathogens and enabling the immune system to respond faster and more effectively during subsequent encounters.
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