Age-Dependent Accumulation of 8-Oxoguanine in the DNA and RNA in Various Rat Tissues

Table 1

The levels of the two types of oxidized guanosine in the urine and plasma of 30-month-old SD rats.

Sources	Forms of guanosine	Concentration of oxidized guanosine (nM)	Ratio of 8-oxo-Gsn to 8-oxo-dGsn
Urine	8-oxo-dGsn	15.42	3.75
	8-oxo-Gsn	57.87
Plasma	8-oxo-dGsn	0.058	1.92
	8-oxo-Gsn	0.111