Fig. 2From: Is a positive intracutaneous test induced by penicillin mediated by histamine? A cutaneous microdialysis study in penicillin-allergic patientsTime course of histamine release at baseline and after intracutaneous test. A 6-microliter sample of dialysate was sampled from each probe every 2 min. Results are displayed as medians and 25th and 75th percentilesBack to article page