Table 1.

The heteroplasmy levels of the m.3243A>G mutation in different tissues.

Tissue	N	Heteroplasmy levels (%)
		Min	Max	Mean
Peripheral blood leukocyte	27	0.102	58	26.97
Urothelium	3	31.4	76	58.13
Muscle	7	0.024	90	49.53
Buccal mucosa	4	40	58	48.25
Hair follicle	2	12.7	70	41.35
Nail	1	32	32	32.00
Myocardium	2	60	75	67.50

N, number of patients.