A semi-selective medium for the detection in Argentinian honeys of spores of Bacillus larvae, a pathogen of American foulbrood, was developed. The technique involves dilution of samples (1:2) in phosphate buffer, concentration of spores by centrifugation and heat treatment prior to inoculation. Two media (JNxPa and JNxPb) were prepared from J-agar, to which… (More)
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