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What is the primary mechanism by which the influenza virus evades the immune sys
What is the primary mechanism by which the influenza virus evades the immune system?
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What is the primary mechanism by which the influenza virus evades the immune system?
Antigenic drift
Phagocytosis
Complement activation
Lysis of host cells
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Antigenic drift refers to the gradual mutation of viral antigens, allowing the influenza virus to evade the host's immune response.
Questions & Step-by-step Solutions
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Q: What is the primary mechanism by which the influenza virus evades the immune system?
Solution:
Antigenic drift refers to the gradual mutation of viral antigens, allowing the influenza virus to evade the host's immune response.
Steps: 7
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Step 1: Understand that the immune system is the body's defense against viruses.
Step 2: Learn that the influenza virus has proteins on its surface called antigens.
Step 3: Know that the immune system recognizes these antigens to fight the virus.
Step 4: Realize that the influenza virus can change its antigens over time.
Step 5: This change is called 'antigenic drift' and happens through small mutations.
Step 6: Because of these mutations, the immune system may not recognize the virus.
Step 7: As a result, the influenza virus can evade the immune response and continue to infect.
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