Table 1.

Cytofluorimetric analysis of xeno-free Human periodontal ligament stem cells cultured at the second passage; the data are representative of five separate experiments

Stemness markers	Oct 3/4	97.2 ± 1.3 %
	Sox-2	98.4 ± 1.8 %
	SSEA-4	97.3 ± 1.6 %
Surface markers	CD 13	96.1 ± 1.3 %
	CD 29	97.1 ± 3.2 %
	CD 44	95.2 ± 2.1 %
	CD 73	96.2 ± 1.3 %
	CD 90	93.1 ± 3.1 %
	CD 105	97 ± 2.9 %
	CD 146	96 ± 2.8 %
	CD 166	95 ± 1.2 %
Hematopoietic markers	CD 14	Not detected
	CD 34	Not detected
	CD 45	Not detected
	CD 117	Not detected
	CD 133	Not detected
	CD 144	Not detected
	CD 271	Not detected
	HLA-DR	Not detected