Fig. 4From: IgE reactivity to fish allergens from Pacific cod (Gadus macrocephalus) in atopic dogsReactivity to cod tropomyosin in dogs with specific IgE to crude cod extracts using ELISA. The cutoff value (dotted line) calculated from 20 negative control samples. Based on the levels of specific IgE to tropomyosin in the negative controls (mean ± SD, 33 ± 67 FU), the cutoff value (mean + 3SD) of IgE reactivity in 36 atopic dogs with specific IgE to crude cod extracts was determined as 234 FU. ELISA, enzyme-linked immunosorbent assayBack to article page