Background: Allergy to peach gibberellin-regulated protein(GRP), Pru p 7, is severe and possibly enhanced by co-factors. In addition, recent studies suggested that 7 allergy could be due cross-reactivity with other GRPs, such as Japanese apricot GRP (Pru m 7), orange (Cit s 7) cedar pollen (Cry j 7). However, the natural history of remains unclear. this study, we investigated course basophil ac...