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Shavonne96 Shavonne96
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6 years ago
Children under age 6 years are at greater risk for infection due to underdeveloped:
 
  1. Leukocytes.
   2. Acquired immunity.
   3. Natural immunity.
   4. Antigens.
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Vianney3Vianney3
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6 years ago
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Shavonne96 Author
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6 years ago
Brilliant
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Yesterday
Thank you, thank you, thank you!
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2 hours ago
You make an excellent tutor!
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