Question

what is the bodys first line of defense against pathogens? A white blood cells B mucous membranes C lymph nodes D red blood cells

Answer 1

The body's first line of defense against pathogens are mucous membranes, as they prevent bacteria from entering the body. Hope this helps!

Answer 2

Hello there.

What is the bodys first line of defense against pathogens? 

A) white blood cells