Did you know?
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.
Did you know?
Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.
Hyperopia (farsightedness). In the uncorrected top figure, the image would come into focus behind th
Otitis media. This illustration shows an inflamed tympanic cavity, which is the most common source o
Mechanical ventilation. The photograph shows a patient receiving breathing assistance by the use of
A new drug development time line with the four phases of drug approval.
North American Climates
A melting profile shows the increase in UV absorption versus temperature