TABLE 2.

PFU resulting from infection of five replicate aliquots of a suspension of M. bovis BCG at approximately 2.5 × 10⁵ CFU/ml with bacteriophage D29 over a range of inoculation concentrations

Inoculum (PFU/ml)	No. of plaques observed in expt:					Mean no. of plaques
	1	2	3	4	5
1.6 × 108	107	119	153	117	139	127
8 × 107	279	174	172	178	208	202
6.5 × 107	196	250	208	200	217	214
5.5 × 10	199	216	203	207	210	205
4.7 × 107	249	214	226	195	204	218
4.1 × 107	272	189	263	243	217	237
3.6 × 107	174	186	217	186	209	188
3.3 × 107	209	213	188	186	209	201
3 × 107	216	201	224	211	225	215
2.2 × 107	307	198	212	239	NAa	239

^aNA, result not available due to damaged petri dish.