What Is the Next Step in the Protocol for the Diagnosis of ABPA? A peripheral blood eosinophil count, serum precipitins (or IgG) against A. fumigatus and a chest radiograph along with a high ...

The organism isolated in each case was grouped and typed by the Lancefield capillary precipitin technic, 19 and its sensitivity to penicillin determined. Throat cultures were taken three times ...

71–212), Hyland Laboratories, Los Angeles, Cal. perature for 48 hours to develop the precipitin arcs specific for the antiserum, and washed for the next 48 hours in 1 per cent sodium chloride to ...