| xanthoma | 黄瘤 | 74 |
| xeroederma pigmentosum | 着色性干皮病 | 120 |
| X-linked dominance inheritance | X连锁显性遗传 | 54 |
| recessive inheritance | X连锁隐性遗传 | 53 |
| XYYsyndrome XYY | 综合征 | 27 |
| xanthoma | 黄瘤 | 74 |
| xeroederma pigmentosum | 着色性干皮病 | 120 |
| X-linked dominance inheritance | X连锁显性遗传 | 54 |
| recessive inheritance | X连锁隐性遗传 | 53 |
| XYYsyndrome XYY | 综合征 | 27 |