AnswersFL-2000310-Biology 1The Immune SystemQuestion 1
1
QuizMultiple Choice

The Immune System

Question 1 • FL-2000310-Biology 1

What do saliva, tears, and nasal mucus have in common?

Answer
A
All can be classified as biological barriers.
B
All contain Langerhans cells.
C
All can destroy bacterial cell walls.
D
All are part of the complement system.
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