A 16-year-old boy is brought to the physician by his mother for a 2-month history of occasional blood in his stool and pain in his hands. A lesion from the patient’s elbow is shown below. Scraping of the lesion causes bleeding.
The pharmacologic treatment for this patient’s hand pain most likely has which of the following molecular targets?
Cell surface receptor
Enzyme
Intracellular receptor
Lymphocyte antigen
Polymerase
