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. Author manuscript; available in PMC: 2015 Dec 15.
Published in final edited form as: Clin Exp Allergy. 2014 Jun;44(6):882–894. doi: 10.1111/cea.12294

Fig. 4.

Fig. 4

Allergenic activity of rFel d 1 and rFel d 1 derivatives as determined using rat basophil leukemia cells (RBL) transfected with human FcεRI. RBL cells were loaded with sera of cat-allergic patients (1–21) or with serum from a non-allergic person and were then exposed to increasing concentrations (0.0001, 0.001, 0.01 and 0.1 μg/mL) of rFel d 1, or equimolar concentrations of rFel d 1 derivatives (rFel d 1 MB + MC, Fel d 1 MF). β-hexosaminidase releases are displayed as percentages of total β-hexosaminidase on the y-axes ± standard error mean (SEM) of triplicates.