Which Statement Is Correct for Leukocytes

question 160

Multiple Choice

Which statement is correct for leukocytes?

• A) They are responsible for the body's various immune defence strategies.
• B) They spend most of their time circulating in the blood.
• C) They are all produced in the lymph nodes.
• D) They are responsible for the body's various immune defence strategies and spend most of their time circulating in the blood.

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