title: [Morphological characteristics of the brain lesions in mice infected with a homogenate of L cells latently infected with the scrapie agent].
abstract: Degeneration of neurons of the Ammon horn lower branch both in the early and terminal stages of the disease of mice infected with the homogenate of L cells latently infected with the scrapie agent (the L-S system) was frequently detected alongside with brain lesions typical of slow infections (vacuolation). Examinations of chromosomes in metaphase plates of L-S cells carried out by several methods including the TAC system for texture analysis of the image (Leutz, BRD) revealed three marker chromosomes new for continuous L cells, the appearance of true chromatid translocations as well as significant changes in chromosome numbers. Besides, ultrastructural features of L-S cells at later stages of cultivation were revealed. It is assumed that the active effect of the scrapie agent on L cells infected with it resulted in the emergency of a new antigen capable to induce selective affection of the neurons of the Ammon horn lower branch in susceptible mice.
mesh_terms: D000818:Animals; D001921:Brain / Q000473:pathology* / Q000648:ultrastructure; D004672:Encephalitis, Japanese / Q000473:pathology; D007739:L Cells / Q000382:microbiology* / Q000648:ultrastructure; D008457:Measles / Q000473:pathology; D008677:Metaphase; D051379:Mice; D008807:Mice, Inbred BALB C; D008854:Microscopy, Electron; D011051:Poliomyelitis / Q000473:pathology; D011818:Rabies / Q000473:pathology; D012608:Scrapie / Q000473:pathology*; D012899:Smallpox / Q000473:pathology; D014776:Virus Cultivation
vernacular_title: Morfologicheskie osobennosti porazheniĭ mozga mysheĭ, zarazhennykh gomogenatom kletok L, latentno infitsirovannykh agentom skrepi.