65,781 views
4 votes
4 votes
The first line of defense involves which structure(s)?

T-cells
skin
blood
B-cells

User SomeInternetGuy
by
2.5k points

2 Answers

13 votes
13 votes

Answer:

b skin

Step-by-step explanation:

User Waris Shams
by
3.2k points
11 votes
11 votes

Answer:

option 2, skin

Step-by-step explanation:

User Rwst
by
3.0k points