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| x chromosome | | The female sex chromosome, being the differential sex chromosome carried ... |
| x linked ichthyosis | | Chronic form of ichthyosis that is inherited as a sex-linked ... |
| x-linked genetic diseases | | Genetic diseases that are linked to gene mutations on the ... |
| x-linked mental retardation | | A class of genetic disorders resulting in mental retardation that ... |
| x-ray computed tomography | | Tomography using x-ray transmission and a computer algorithm to reconstruct ... |
| x-ray densitometry | | Measurement of the degree of darkening of X-ray film by ... |
| x-ray diffraction | | The scattering of x-rays by matter, especially crystals, with accompanying ... |
| x-ray intensifying screens | | Screens which absorb the energy in the x-ray beam that ... |
| x-rays | | Penetrating electromagnetic radiation emitted when the inner orbital electrons of ... |
| xanthomatosis | | A condition of morphologic change in which there is accumulation ... |
| xenon | | A noble gas with the atomic symbol Xe, atomic number ... |
| xeroderma pigmentosum | | A rare, pigmentary, and atrophic autosomal recessive disease. It is ... |
| xerophthalmia | | Dryness of the eye surfaces caused by deficiency of tears ... |
| xeroradiography | | A photoelectric method of recording an X-ray image on a ... |
| xyy karyotype | | Abnormal genetic constitution in males characterized by an extra Y ... |
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