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suo90821 suo90821
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8 years ago
The lower respiratory tract is protected by all of the following EXCEPT
A) alveolar macrophages.
B) mucous secretions.
C) the ciliary escalator.
D) competition with the normal flora of the lungs.
E) IgA antibodies.
Textbook 
Microbiology: An Introduction

Microbiology: An Introduction


Edition: 11th
Authors:
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Microbiology: An Introduction
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montgomerymontgomery
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8 years ago
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suo90821 Author
wrote...
8 years ago
I'm officially closing this topic, thanks for answering my question
Microbiology: An Introduction
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8 years ago
Glad to help
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