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Home Q & A Board Biology-Related Homework Help Medicine Nursing and Clinical
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hannah20082 hannah20082
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6 years ago
Which of these statements about white blood cells (WBCs) is TRUE?
 
  a. They are responsible for the exchange of O2 and CO2.
  b. They are active in the clotting mechanism of the body.
  c. They are produced by the liver according to the demand of the body.
  d. They are responsible for fighting infection and assisting with immunity.
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dalj;adalj;a
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6 years ago
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hannah20082 Author
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6 years ago
Helped a lot
klyn
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Yesterday
Good timing, thanks!
jakechambo3
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2 hours ago
You make an excellent tutor!
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