the level of circulating specific ige antibodies ( expressed as rast ratios ) was not related to the type of asthmatic reaction , the degree of nonspecific bronchial hyperreactivity [ expressed by the provocative concentration of methacholine producing a 20 % decrease in the forced expiratory volume in 1 sec ( pc20 ) ] or the index of reactivity to plicatic acid .
C0085129
bronchial hyperreactivity
C0600370
methacholine