TABLE 4.

Distribution of A. pleuropneumoniae serotype 1 and normal flora recovered from infected herds by the IMS technique and the standard procedure

No. of CFU/plate	% Plated tonsils positive by the following method:
	IMS		SPa
	APP	Normal flora	APP	Normal flora
<10	26	36	75	3
10–300	58	60	19	22
>300	16	4	6	75

^aSP, standard procedure.