Table 3.

Growth of MAC under different conditions

Conditions	Inoculum (time zero)	No. of MAC CFU/ml (mean ± SD)
		24 h	48 h
Middlebrook 7H9 broth + OADC	1 × 105 ± 0.6 × 105	6.8 × 105 ± 0.5 × 105	1.7 × 106 ± 0.4 × 106a
24-h elemental mixture	1 × 105 ± 0.2 × 105	2.8 × 105 ± 0.4 × 105	7.3 × 105 ± 0.3 × 105a
Raw 264.7 macrophages	2 × 105 ± 0.4 × 105	4.3 × 105 ± 0.5 × 105	8.9 × 105 ± 0.3 × 105a

^aP < 0.05 compared with the number of bacteria at time zero.