This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Skin prick testing for allergies. en person receiving skin prick test SPT An SPT is performed by using needle to place tiny amount of liquid allergen just under the skin of the forearm SPTs are safe and the results raised bump with redness around it called wheal and flare usually appear within minutes number of allergens can be