Adults should get 45 percent to 65 percent<span> of their calories from carbohydrates, </span>20 percent<span> to </span>35 percent<span> from fat, and 10 to </span>35 percent<span> from protein.</span>
The answer to your questions : secreted substance by the cell
that originally produced and secreted it. The process of reuptake, for
example, affects serotonin.