منابع مشابه
Wave optics of Liesegang rings.
Liesegang rings refract and reflect at the interface between the regions of the same gel but of different thickness. The incident and the refracted rings obey a refraction law analogous to the Snell's law of classical optics, with a reverse of the spacing coefficient being a counterpart of the refraction index. The wavelike behavior of the rings at the interface is explained by geometrical argu...
متن کاملLiesegang rings: The misnomer in calcifying epithelial odontogenic tumor?
Calcifying epithelial odontogenic tumor (CEOT) is a benign epithelial odontogenic tumor which is characterized by the presence of islands and sheets of epithelial cells, amyloid like material and calcifications. These calcifications have a concentric lamellar pattern because of which they have been known by some as liesegang rings. However, classic liesegang rings seen in other extragnathic sit...
متن کاملLiesegang Rings in Xanthogranulomatous Pyelonephritis: A Case Report
Liesegang rings are concentric noncellular lamellar structures, rarely seen in vivo, occurring as a consequence of the accumulation of insoluble products in a colloidal matrix. These characteristic structures are a rare phenomenon usually found in association with cystic or inflammatory lesions and may be mistaken for parasites. The authors examined Liesegang rings from an inflammatory kidney l...
متن کاملGrowth and Characteristics of Liesegang Rings in Cu–Cr System: Optical and XRF Study
Liesegang rings were first discovered more than 100 years ago by German chemists R. E. Liesegang and they attracted much attention since then. Liesegang rings are observed as spontaneous evolution of precipitate ring structure during diffusion of certain electrolyte into medium containing other electrolyte. One such example is diffusion of CuSO4 into gelatin containing K2CrO4 that is subject of...
متن کاملLiesegang-Like Rings in Lactational Changes in the Breast
Liesagang-like rings (LR) are periodic structures with equally spaced radial striations formed by a process that involves diffusion, nucleation, flocculation or precipitation, and supersaturation. Being more common in vitro, on rare occasions also reported in vivo in association with inflammatory or cystic lesions and confused with parasites or calcification on needle aspirates. The current pap...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1934
ISSN: 0306-3283
DOI: 10.1042/bj0281086