Figure 5: Inhibition of human IgE antibodies with the IgG produced in immunized rabbits (dilution 1/2). Native extract of B. alba or rBet v 1 is used in solid phase. The human pool of sera was diluted to 1/10. The formula for calculating the percentage of IgE inhibition is shown, and being the optical densities after preincubation with the rabbit’s immune sera and the corresponding preimmune sera, respectively.