What helps keep people from getting sick?
virus sweating bacteria sensory neurons Exfoliation layers of fat trees Memory cells
A B C D E F G H
People with weaker immune systems are more likely to get sick from contaminated foods.
memory cells help keep people from getting sick
What helps keep people from getting sick? (A) virus (B) sweating (C) bacteria (D) sensory neurons (E) Exfoliation (F) layers of fat (G) trees (H) Memory cells