Think about the formula for photosynthesis, (CO2 + H2O = C6H12O6 + O2) and explain like you would to a five year old. Ex. When you add carbon dioxide and oxygen...
<h2><u><em>Upon reinfection, the memory cells will immediately differentiate into plasma cells and CTLs without input from APCs or TH cells.</em></u></h2>
Explanation:
<h3>Hope i helped (<em>Tell me the results in the comments below pls</em>) Good Luck!</h3>