Kleeberg J, Gordon T, Kedar S, Dobler M
Urol Res. 1981;9(6):259-61. doi: 10.1007/BF00257774.
Human uric acid acid renal stones are easily distinguished from other urinary calculi by their globular or spherical shape, their colour and their hardness. Investigations of uric acid crystals grown in the presence of a variety of pigments indicate that a disordered layer structure of the uric acid dihydrate is responsible for the colour of such crystals, caused by the inclusion of pigment molecules into the crystal lattice. This in turn may help to explain the other special properties of uric acid stones.
人尿酸肾结石很容易通过其球状或球形、颜色及硬度与其他尿路结石区分开来。对在多种色素存在的情况下生长的尿酸晶体进行的研究表明，二水合尿酸的无序层状结构是此类晶体颜色的成因，这是由于色素分子纳入晶格所致。这反过来可能有助于解释尿酸结石的其他特殊性质。
