Table 2. Numbers of USC clones in different preservation solutions of urine.

Groups	Gross success rate of generating USC clone (%)	Numbers of cell clones/100 ml urine		Total clones/100 ml
		USC clones	Differentiating cells
G1. Fresh urine (control)(24 hours storage, n = 30)	(83%) 25/30 urine samples	6.29±4.6	1.39±1.47	7.62±5.86
G2. HTK solution(24 hours storage, n = 30)		2.07±1.42	0.85±0.54	2.68±1.93
G3. UW solution(24 hours storage, n = 30)		0	0	0
G4. USC culture medium (0.5% FBS) (24 hours storage, n = 30)	(70%) 21/30 urine samples	3.16±1.95	0.98±0.72	3.91±2.50
G5. USC culture medium (10% FBS) (24 hours storage, n = 30)	(73%) 22/30 urine samples	3.37±1.29	0.73±0.32	4.04±1.55
G6. USC culture medium (serum free) (24 hours storage, n = 30)		1.08±0.5	1.01±0.48	2.09±0.75
G7. 0.5% FBS(24 hours storage, n = 30)		1.19±0.36	0.69±0.29	1.86±0.57
G8. USC culture medium (0.5% FBS) (12 hours storage, n = 9)		4.15±1.21	1.29±0.42	5.44±1.39
G9. No preservation (control)		0	0	0