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Question 13903
NEET Biology · Easy

Human Health and Disease: Immunity MCQ

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ImmunityEasyQuestion 13903

Question

The first line of defense in innate immunity includes:

  1. A
    Physical barriers like skin
    Correct
  2. B
    Antibody memory only
  3. C
    Vaccination only
  4. D
    A single lymphocyte

Correct answer

Physical barriers like skin

Explanation

Innate defenses include skin, mucosa, and other non-specific protections.

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