Characteristics of Mesenchymal Stem Cells Are Independent of Bone Marrow Storage Temperatures

Table 2

Expression of specific surface proteins. Positive expression with a median higher than 90% was observed for the surface proteins CD13, CD29, CD44, CD73, CD90, CD105, and CD166 in all groups. The surface proteins CD11b, CD15, CD31, CD34, and CD45 were expressed less than 10% in median on stem cells.

Surface protein	0 h			4°C			RT
	Median			Median			Median
CD13	97.4	95.0	98.0	98.1	97.0	98.4	98.0	97.1	98.4
CD29	98.6	97.3	100.0	98.5	97.0	99.0	98.7	98.0	99.0
CD44	98.6	97.8	100.0	98.2	97.9	98.8	98.3	97.3	98.3
CD73	98.8	98.3	99.6	98.5	98.2	99.6	98.7	98.3	98.8
CD90	95.9	94.7	99.0	96.7	88.1	97.6	95.3	87.1	97.6
CD105	99.3	98.4	100.0	98.6	98.4	99.1	98.8	98.7	99.0
CD166	98.5	98.0	99.0	98.7	98.6	99.0	98.6	98.6	98.6
CD11b	1.1	0.0	1.6	1.0	1.0	2.0	1.4	0.4	2.0
CD15	0.4	0.2	1.0	0.7	0.2	1.4	0.4	0.0	1.0
CD31	1.8	1.2	2.6	3.1	1.4	4.6	2.7	1.6	5.7
CD34	0.8	0.0	5.0	1.0	0.0	7.0	1.1	0.0	7.0
CD45	1.1	0.4	3.0	1.5	0.5	1.8	1.1	0.9	2.0