21. The Immune System
First-Line Defenses: Chemical Barriers
Problem 16b
Textbook Question
Textbook QuestionCompared with innate defenses, adaptive defenses (a) do not distinguish between one threat and another, (b) are always present at birth, (c) protect against threats on an individual basis, (d) deny the entry of pathogens to the body.
163
views
Was this helpful?
Related Videos
Related Practice
Showing 1 of 19 videos