ID#: 27005
Caption:
This image depicted three right forearms, each having received an intracutaneous injection of dirofilaria antigen, prepared from Dirofilaria immitis, and producing the reactions at the site of each wheal. If an erythematous reaction is observed at the reaction site, then a positive result would be indicated.
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Content Provider(s): CDC
Creation Date: 1946
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Copyright Restrictions: None - This image is in the public domain and thus free of any copyright restrictions.