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Humanizer
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Science 7 B M12 2526 S2
The Immune System
Question 3
3
Quiz
Multiple Choice
The Immune System
Question 3 of 10 • Science 7 B (M12 25/26 S2)
The first line of defense involves which structure(s)?
Answer
A
T-cells
B
skin
C
blood
D
B-cells
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