TABLE 3.

PFU detected during D29 infection of 0.1-ml portions of a serial dilution of BCG samples plated prelysis (90 min postinoculation) and during the rise period (240 and 420 min)^a

CFU/ ml	No. of PFU at:
	90 min (n = 10)				240 min (n = 10)				420 min (n = 10)
	Mean	Min	Max	SD	Mean	Min	Max	SD	Mean	Min	Max	SD
506	17.5	13	20	2.7	200.9	86	474	116.2	240.8	9	744	249.5
242	6.3	3	10	2.7	62.2	7	107	35.5	186.7	7	366	155.4
117	3.6	1	9	2.4	48.8	7	165	55.8	116.6	0	339	144.3
51	1.3	0	3	1.06	4.5	0	26	8.2	80.3	0	436	145.3
30	1.5	0	4	1.35	103.1	1	379	157.6	118.5	0	496	171.6
6	0	0	0		0	0	0		21.5	0	215	68
0	0	0	0		0	0	0		0	0	0

^aThe minimum (Min), maximum (Max), and mean numbers of plaques observed per sample are recorded. n, the number of replicate portions tested.