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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
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.
Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
The average adult has about 21 square feet of skin.
According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.
![A typical pedestal grinder with a wire wheel on the left side and a stone wheel on the right side. ...](https://biology-forums.com/gallery/29/medium_548020_25_05_17_2_44_55_29461604.png)
![The side injector combines with the shape of the piston to create a swirl as the piston moves up ...](https://biology-forums.com/gallery/30/medium_548020_31_05_17_1_51_46_300221466.png)