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| ethnicity | N | # unique A alleles | # unique B alleles | # unique C alleles | # unique DRB1 alleles |
| Irish | 1000 | 26 | 49 | 23 | 33 |
| North American Asian | 393 | 34 | 66 | 24 | NA |
| North American European | 287 | 28 | 48 | 21 | NA |
| North American Black | 251 | 28 | 49 | 23 | NA |
| North American Hispanic | 240 | 35 | 62 | 25 | NA |
| North American Amerindian | 229 | 27 | 55 | 22 | NA |
| All except Irish | 1400 | 48 | 102 | 31 | NA |
