NMGAJL NMGAJL
  • 26-04-2017
  • Health
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The body's first line of defense against pathogens includes all of the following except: a) the skin, b) wax in the ears, c) white blood cells, d) mucous membranes in the nose and mouth

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majop5280 majop5280
  • 26-04-2017
B wax in the ears is a second line defense 
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