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Using immunoblotting and densitometer techniques, we followed the levels of IgE and IgG4 antibodies to Dermatophagoides farinae antigen in the sera of 12 asthmatic children during immunotherapy, repeated injections of house dust extract, for 2 years. The symptoms of asthma were reduced or disappeared by the 6th month after starting immunotherapy in 12 children. Two years later, RAST scores to house...
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