Unused vitamin A is stored up in the fat cells of the body, so it builds up over time.
Answer: b. involves formation of free radicals.
Explanation:
Reperfusion injury is the injury that is caused by the damage of the tissues and cells due to deficiency of supply of oxygen to the cells through blood. This results in the formation of the free radicals typically when the high energy electrons reduce the available oxygen to the tissues. This results in more damage to the tissues than the hypoxia.
