Stereotyped BCR in human PB conventional, CD5+, and CD43+ B cells
| Donorsanalyzed | Sample | V genes obtained | V genes included in analysisa | Unique sequencesb | Stereotyped receptorsb | Fisher’s exact testc |
| 4d | conventional | 143 | 125 | 107 | 1 | |
| 4d | CD5+ | 460 | 419 | 160 | 12 | P < 0.018 |
| 2e | conventional | 196 | 169 | 141 | 6 | |
| 2e | CD5+ | 180 | 158 | 145 | 18 | P < 0.018 |
| 2e | CD43+ | 115 | 72 | 12 | 0 | P < 1 |
| Donorsanalyzed | Sample | V genes obtained | V genes included in analysisa | Unique sequencesb | Stereotyped receptorsb | Fisher’s exact testc |
| 4d | conventional | 143 | 125 | 107 | 1 | |
| 4d | CD5+ | 460 | 419 | 160 | 12 | P < 0.018 |
| 2e | conventional | 196 | 169 | 141 | 6 | |
| 2e | CD5+ | 180 | 158 | 145 | 18 | P < 0.018 |
| 2e | CD43+ | 115 | 72 | 12 | 0 | P < 1 |
Only full-length V gene rearrangements and correct V-gene, i.e., VH1-69, VH3-21, VH3-23, VH3-48, and VH4-34 in stereotyped BCR-specific PCR approach
Identical sequences counted as one. When all sequences obtained are counted individually, the statistical significance is below P < 0.001. Stereotypy was determined based on a 60% homology of the CDR3.
P-values calculated by Fisher’s exact test versus unique conventional B cell sequences.
Total numbers of VH1 and VH3 gene analysis of four independent healthy blood donors are given, for details see Table S3.
Total numbers of V genes amplified by PCR for VH gene segments frequently used by stereotyped BCR of two independent healthy blood donors are given, for details see Table S7.