Table 1.

The profile of each sample for primary culture

No.	Sex	Age (years)	Biopsy	Duration (Months)	Etiology
1	F	24	KS: Shoulder NS: Shoulder	20	Trauma
2	F	16	KS: Neck NS: Neck	6	scald
3	M	5	KS: Foot NS: Leg	16	Flame burn
4	F	21	KS: Chest NS: Chest	22	Trauma
5	F	47	KS: Earlobe NS: Neck	17	Trauma
6	M	37	KS: Chest NS: Chest	12	Oil burn
7	M	62	KS: Chest NS: Chest	15	Operation
8	F	40	KS: the back of the hand NS: forearm	28	Flame burn
9	F	20	KS: Back NS: Back	10	Trauma
10	M	27	KS: elbow hand NS: the upper arm	11	scald
11	F	29	KS: Abdomen NS: Abdomen	12	operation
12	M	35	KS: Shoulder NS: Shoulder	17	Trauma
13	M	15	KS: Forearm NS: Forearm	12	Trauma
14	M	26	KS: Foot NS: Leg	20	Flame burn

F: female; KS: keloid skin; M: male; NS: normal skin.