Which of the following is a first line of defense for the immune system?
A) complementl proteins
B) bronchiole associated lymphoid tissue
C) neutrophils
D) inteferon
Answer: B) bronchiole associated lymphoid tissue
Which of the following is a first line of defense for the immune system?
A) complementl proteins
B) bronchiole associated lymphoid tissue
C) neutrophils
D) inteferon
Answer: B) bronchiole associated lymphoid tissue
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