title: [Problem of choosing radiation for x-ray analysis of biological objects in their native form (for instance collagen treated within the substance of the dermis)].
abstract: Some authors report that collagen in derma after industrial treating by the salts of chrom imply rather diffuse X-ray patterns. At the same time our X-ray photographs of these samples using Cr Ka-irradiation rather then Cu Ka-irradiation are all of fine quality. Therefore the collagen in derma is not distroed after salt treatment. In fact Ka-seria of Cu (using in all other investigations) cause transitions in Cr-atoms implying as diffuse phone on the film.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D002857:Chromium / Q000494:pharmacology*; D003094:Collagen; D012867:Skin / Q000032:analysis* / Q000187:drug effects; D014961:X-Ray Diffraction
chemical_list: D002857:Chromium; D003094:Collagen
vernacular_title: Problemy vybora izlucheniia dlia rentgenograficheskogo analiza biologicheskikh struktur v nativnoĭ forme (ma primere kollagena, obrabotannogo v sostave dermy).