Mycobacterium tuberculosis from chronic murine infections that grows in liquid but not on solid medium

BMC Infectious Diseases

Table 3 Plate and broth counts of M. tuberculosis in spleen and lungs of mice with chronic infections, when plate counts had no colonies

Organ with no colonies in plate counts*	No. of mice	Organ	Type of count^†	Mean count	SD	95% confidence limits
Spleen & lungs	2	Spleen	Broth	3.728	0.708	-2.638	10.094
		Lungs	Broth	4.247	1.428	-8.580	17.073
Lungs only	7	Spleen	Plate	3.079	0.960	2.192	3.968
			Broth	4.347	0.823	3.586	5.108
		Lungs	Broth	4.202	0.624	3.625	4.778

* A count of <1.40 log₁₀ cfu/organ
^† Plate counts are log₁₀ cfu/organ: broth counts are log₁₀ probable number of bacilli/organ

ISSN: 1471-2334