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Author Question: Nonsanctioned leadership is usually less important than formal influence. (Read 42 times) |
Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.