Swelling of a patient's left knee (right in picture) following a bite from a horsefly. The bite has triggered an allergic reaction,causing swelling and erythema. The allergen in this case is the saliva of the horsefly. Horseflies (family Tabanidae) are blood- drinking insects. The saliva contains an anti- clotting agent to enable the horsefly to drink freely | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Bradbury, Dr. Vic |
Taille de l’image : | 5147 px × 3402 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |