Umbilical cord blood CD20+CD27+CD43+ B cell immunoglobulins express few mutations
| B cell populations | Total mutations (no. of bases) | VH mutations (no. of bases) | N1 additions (no. of bases) | N2 additions (no. of bases) | CDR3 length (no. of bases) |
| B1: CD20+CD27+CD43+ | 2.0 ± 0.3 | 0.14 ± 0.05 | 6.8 ± 1.2 | 3.8 ± 0.7 | 14.5 ± 0.7 |
| B2: CD20+CD27−CD43− | 1.9 ± 0.4 | 0.08 ± 0.06 | 6.4 ± 0.8 | 4.6 ± 0.8 | 14.8 ± 0.7 |
| B cell populations | Total mutations (no. of bases) | VH mutations (no. of bases) | N1 additions (no. of bases) | N2 additions (no. of bases) | CDR3 length (no. of bases) |
| B1: CD20+CD27+CD43+ | 2.0 ± 0.3 | 0.14 ± 0.05 | 6.8 ± 1.2 | 3.8 ± 0.7 | 14.5 ± 0.7 |
| B2: CD20+CD27−CD43− | 1.9 ± 0.4 | 0.08 ± 0.06 | 6.4 ± 0.8 | 4.6 ± 0.8 | 14.8 ± 0.7 |
Number of cells analyzed: B1, n = 43; B2, n = 25. Mean number ± SEM.