IGHE and ataxia telangiectasia: The reactivity analysis of L. multiflorum total extract S1 and fraction S2 components was evaluated in 35 serum samples of AT patients, which were divided into 7 pools (5 serum samples/pool), according to absorbance value obtained in ELISA for specific IgE antibody levels (maximum absorbance value: minimum absorbance value / number of pools).