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Genotypes and allele frequencies of the DHFR 19 bp (rs70991108) polymorphism in healthy young Irish adults1
| DHFR 19 bp polymorphism | Total | Men | Women |
| wt/wt | 829 (33.1) | 340 (32.8) | 489 (33.3) |
| wt/del | 1204 (48.1) | 507 (48.9) | 697 (47.5) |
| del/del | 470 (18.9) | 189 (18.2) | 281 (19.2) |
| wt | 2862 (57.2) | 1187 (57.3) | 1675 (57.1) |
| del | 2144 (42.8) | 885 (42.7) | 1259 (42.9) |
Values are n (%). del, deletion; DHFR, dihydrofolate reductase; wt, wild-type.
