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 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Bradbury, Dr. Vic |
Bildgröße: | 5147 px × 3402 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |