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suo90821 suo90821
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7 years ago
All of the following protect the skin and mucous membranes from infection EXCEPT
A) tears.
B) the "ciliary escalator."
C) multiple layers of cells.
D) HCl.
E) saliva.
Textbook 
Microbiology: An Introduction

Microbiology: An Introduction


Edition: 11th
Authors:
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Microbiology: An Introduction
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LuichenLuichen
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7 years ago
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suo90821 Author
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#2
7 years ago
This is exactly what I needed, seriously THX
Microbiology: An Introduction
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#3
7 years ago
Not at all
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