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    Biology Study Set 1
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    Exam 23: Animal Tissues and Organ Systems
  5. Question
    The Body's First Line of Defense Against Disease-Causing Microorganisms Is
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The Body's First Line of Defense Against Disease-Causing Microorganisms Is

Question 3

Question 3

Multiple Choice

The body's first line of defense against disease-causing microorganisms is


A) the white blood cells.
B) the process of phagocytosis.
C) the production of antibodies.
D) the production of T lymphocytes.
E) the intact skin.

Correct Answer:

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