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ALLERGY TEST PATCHES ON A YOUNG WOMAN'S BACK
Allergy patch test. Close-up of two allergy test strips on the back of a young woman. On each test strip are ten patches, each of which is used to establish sensitivity to certain allergens. This is called a patch test. Small amounts of a variety of common allergens, such as pet hair, pollen and house dust, are placed onto various patches. The patches are then stuck onto the patient's skin, in some cases after the skin is pricked. Allergic reactions cause the skin around the relevant patch to become inflamed, denoting the allergen to which the patient is sensitive. By knowing the allergy, the patient can alter their diet or behaviour to avoid the allergen. (KEYSTONE/SCIENCE PHOTO LIBRARY/SATURN STILLS)
Instructions
COPYRIGHTPFLICHTIG
License
Rights Managed
Date created
19981214
Place
Credit
KEYSTONE
Source
SCIENCE PHOTO LIBRARY SPL
Byline
SATURN STILLS
Size
2689 x 3543 px
File type
JPEG