Hypersensitivity to thermophilic actinomycetes

Typical clinical and two stage physiologic response to inhalation challenge with an extract of thermophilic actinomycetes.

FVC: forced vital capacity; FEV₁: forced expiratory volume in one second; D_LCO: diffusing capacity, mL/min/mmHg.

Redrawn from: Schlueter DP, Am J Med 1974; 57:476.

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