After the macrophage fails the Helper T Cell stimulates the B cells (create antibodies) if pathogen is extracellular and Cytotoxic T Cells (killer T cells, release perforin) if pathogen is intracellular. Once the pathogen is killed the B Cells create Memory B Cells and the Killer T Cells create memory T Cells.
Answer: D. Social withdrawal
Explanation:
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There is a saying that goes, your hart stops beating or skips a beat every time you sneeze.
A cool down routine is important after exercise because it helps to bring your heart rate down to a normal level after increasing it during exercise.