The correct answer is helper T cells.
<span>The helper T cells are one of the main cells of the adaptive immune system. Their role is to help the activity of other immune cells by releasing T cell cytokines and they are required for almost all adaptive immune responses. The helper T cells activate B cells to secrete antibodies, stimulate macrophages to destroy ingested pathogens, and help in activation of cytotoxic T cells to kill infected target cells.</span>
Double displacement reactions occur if ONE of the products is water, a gas or solid.
Answer:
The epidemic caused us to quarantine if we got infected to protect those around us.
Explanation:
