Identification of multiple T-cell epitopes on Bet v I, the major birch pollen allergen, using specific T-cell clones and overlapping peptides - Ebner,C.; Szépfalusi,Z.; Ferreira,F.; Jilek,A.; Valenta,R.; Parronchi,P.; Maggi,E.; Romagnani,S.; Scheiner,O.; Kraft,D. (J Immunol, 1993)