Somatic hypermutation in rearranged VH5 sequences in unstimulated and stimulated CB B cells
. | Number of sequences . | Mutations . | |||||
---|---|---|---|---|---|---|---|
Total . | Mutated . | Range . | Total no. . | R . | S . | Frequency/total sequences, % . | |
Before stimulation | |||||||
CB B cells | |||||||
1 | 12 | 4 (33%) | 0-2 | 7 | 5 | 2 | 0.20 |
2 | 12 | 3 (25%) | 0-1 | 3 | 3 | 0 | 0.08 |
3 | 12 | 1 (8%) | 0-1 | 1 | 1 | 0 | 0.03 |
4 | 12 | 0 (0%) | 0 | 0 | 0 | 0 | 0 |
5 | 10 | 3 (30%) | 0-3 | 7 | 5 | 2 | 0.24 |
After stimulation | |||||||
CD20+CD38−cells | |||||||
1 | 10 | 5 (50%) | 0-5 | 19 | 17 | 2 | 0.65 |
2 | 10 | 3 (30%) | 0-5 | 10 | 8 | 2 | 0.34 |
3 | 10 | 4 (40%) | 0-1 | 4 | 3 | 1 | 0.14 |
4 | 10 | 1 (10%) | 0-1 | 1 | 1 | 0 | 0.03 |
5 | 10 | 3 (30%) | 0-3 | 6 | 5 | 1 | 0.2 |
CD20−CD38+ B cells | |||||||
1 | 12 | 6 (50%) | 0-3 | 13 | 10 | 3 | 0.37 |
2 | 12 | 5 (42%) | 0-4 | 11 | 10 | 1 | 0.31 |
3 | 12 | 4 (33%) | 0-1 | 4 | 4 | 0 | 0.11 |
4 | 10 | 5 (50%) | 0-6 | 12 | 10 | 2 | 0.41 |
5 | 10 | 1 (10%) | 0-1 | 1 | 1 | 0 | 0.03 |
. | Number of sequences . | Mutations . | |||||
---|---|---|---|---|---|---|---|
Total . | Mutated . | Range . | Total no. . | R . | S . | Frequency/total sequences, % . | |
Before stimulation | |||||||
CB B cells | |||||||
1 | 12 | 4 (33%) | 0-2 | 7 | 5 | 2 | 0.20 |
2 | 12 | 3 (25%) | 0-1 | 3 | 3 | 0 | 0.08 |
3 | 12 | 1 (8%) | 0-1 | 1 | 1 | 0 | 0.03 |
4 | 12 | 0 (0%) | 0 | 0 | 0 | 0 | 0 |
5 | 10 | 3 (30%) | 0-3 | 7 | 5 | 2 | 0.24 |
After stimulation | |||||||
CD20+CD38−cells | |||||||
1 | 10 | 5 (50%) | 0-5 | 19 | 17 | 2 | 0.65 |
2 | 10 | 3 (30%) | 0-5 | 10 | 8 | 2 | 0.34 |
3 | 10 | 4 (40%) | 0-1 | 4 | 3 | 1 | 0.14 |
4 | 10 | 1 (10%) | 0-1 | 1 | 1 | 0 | 0.03 |
5 | 10 | 3 (30%) | 0-3 | 6 | 5 | 1 | 0.2 |
CD20−CD38+ B cells | |||||||
1 | 12 | 6 (50%) | 0-3 | 13 | 10 | 3 | 0.37 |
2 | 12 | 5 (42%) | 0-4 | 11 | 10 | 1 | 0.31 |
3 | 12 | 4 (33%) | 0-1 | 4 | 4 | 0 | 0.11 |
4 | 10 | 5 (50%) | 0-6 | 12 | 10 | 2 | 0.41 |
5 | 10 | 1 (10%) | 0-1 | 1 | 1 | 0 | 0.03 |
Nucleotide exchange frequency in the VH5 segments of Cμ transcripts. The total number of nucleotides sequenced for the VH5 segments is 294 base pairs.
R and S indicate replacement and silent mutations, respectively.