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The distribution of the lactase-persistent/non-persistent genotypes by ethnicity n (%)
| CC-139101 | CT-139102 | TT-139102 | Total | |
| Russian | 53 (35.6) | 76 (51.0) | 20 (13.4) | 149 (100) |
| Others | 9 (42.8) | 11 (52.4) | 1 (4.8) | 21 (100) |
| Information missing | 22 (36.1) | 26 (42.6) | 13 (21.3) | 61 (100) |
| Total | 84 (36.5) | 112 (48.7) | 34 (14.8) | 231 (100) |
Lactase non-persistent genotype;
Lactase persistent genotype.
