A 20-year-old man has experienced painful urination for 4 days following spring 3 . break. A urethritis is suspected, and Neisseria gonorrheae is cultured. Numerous neutrophils are present in a smear of the exudate from the penile urethra. These neutrophils are most likely to have been caused to undergo diapedesis to reach the organisms as a consequence of release of which of the following chemical smediators a Histamine b) Prostaglandin c) Hageman factor d) Bradykinin e) Complement
