Register
Surface barriers, such as cutaneous and mucous membranes, serve the immune system as the
127k views
2 votes
Surface barriers, such as cutaneous and mucous membranes, serve the immune system as the

User Pavel L
by
8.9k points

1 Answer

4 votes
first line of defense
User Peter Schorn
by
7.7k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.5m questions

12.2m answers

Other Questions

Which of the objects is living or nonliving: Bacteria, virus, moss, you, a lemon seed, the air, bread, lettuce and rocks?
Why aren't all minerals gemstones?
What are three important types of forces
How can paleontologists help us understand the past
What is the phenotype of a heterozygous person using T for tall and t for short
Link Copied!