Bone Marrow Mesenchymal Stem Cells Enhance the Differentiation of Human Switched Memory B Lymphocytes into Plasma Cells in Serum-Free Medium

Table 1

Expression of CD31, CD38, CD39 and CD138 among plasma cells population on day 20.

Condition	Population^1	Cells^2 (%)
		CD31	CD38	CD39	CD138
21% O2
L4.5	A	19,2 ± 4,8	23,0 ± 6,8	93,3 ± 1,0	44,9 ± 4,8
	B	57,8 ± 4,4	49,4 ± 8,9	93,1 ± 4,4	57,3 ± 8,0
MSC	A	26,2 ± 4,4	40,8 ± 5,7	77,9 ± 7,6	11,8 ± 6,2
	B	87,4 ± 2,3	86,3 ± 5,6	97,0 ± 2,4	74,9 ± 6,0
8% O2
L4.5	A	14,5 ± 4,6	15,5 ± 4,8	91,6 ± 1,4	24,0 ± 6,4
	B	62,6 ± 2,3	42,7 ± 6,0	97,6 ± 0,9	52,5 ± 7,6
MSC	A	23,9 ± 3,3	36,7 ± 2,4	76,2 ± 5,1	7,3 ± 1,7
	B	87,1 ± 1,7	89,9 ± 1,2	98,2 ± 1,3	78,3 ± 4,1

¹Analyses were done according to the populations A and B as describes respectively as and as showed in Figures 5 and 6.
²The proportion of cells positive for each marker was determined for 5 independent experiments by cytometry analysis as showed in Figure 6. Data are mean ± S.E.M.