Study group: 23 patients with suspected allergy to Pru p 7 (GRP) (confirmed by clinical history, positive SPT for peach extract and cypress extract, negative sIgE against Pru p 3)Control group: 14 individuals with food allergies sensitized to Pru p 3 with no suspected Pru p 7 sensitization (history of immediate reactions after peach exposure, positive SPT for peach extract, negative SPT for cypress extract, positive sIgE for Pru p3). Here, GRP is linked to Allergy.