Answer: An external factor caused damage to the nerve cells. However, the injection of new cells into the injured area prompted a beneficial change. The injured cells received proteins that decreased inflammation and pain in the mice.
Answer:
heart blood vessels and blood
<span>This is a barrier island. These typically are formed as a way of protecting the mainland from storms and erosional forces. In addition, barrier islands typically form parallel to the mainland and in chains. These islands can allow wetlands to form once enough sand has built up near the shoreline.</span>
A pituitary glad tumor releasing too much hormones