title: [Quasicrystal organization in extracellular matrixes].
abstract: In this note we argue that the theoretical approach, developed in the field of quasicrystals, may prove to be useful in a completely different area, namely biology, and more precisely for the transmission electron microscopy observation of biological structures this sections. Whatever the real three-dimensional structure is periodic, a generic cut will produce a quasiperiodic pattern. This is illustrated in a "theoretical" example inspired by the 3D organization of annelid cuticle. In addition, we discuss recent results on dislocations in quasicrystals, and their possible consequence about observation in biology. Finally, this analysis could be extended to images obtained from other technics, like freeze-fracture, and other materials, provided that certain length scale relations be satisfied.
authors.affiliation: CNRS et EPHE, Ivry-sur-Seine, France.
authors.forename: F
authors.initials: F
authors.lastname: Gaill
authors.forename: R
authors.initials: R
authors.lastname: Mosseri
mesh_terms: D003461:Crystallography; D005109:Extracellular Matrix / Q000648:ultrastructure*; D005614:Freeze Fracturing; D008854:Microscopy, Electron; D008954:Models, Biological; D008961:Models, Structural
vernacular_title: Ordre quasicristallin dans les matrices extracellulaires.