title: [An "unusual" stress-activated Drosophila virilis 20CD puff: cytologic localization of the thermostable locus and characteristics of the reaction to heat shock].
abstract: Using a series of chromosome aberrations heat shock (hs) inducible site of 20CD Drosophila virilis hs puff was cytologically localized in distal 20C subdivision: the hs puff was not observed in chromosome 2 carrying Df(2)eb deficiency; the bands in proximal 20D subdivision are unable to provide autonomous activation by hs in aberrant chromosomes having this deficiency or the In(2)eb inversion. Electron microscopical analysis of successive stages of 20CD development showed the hs puff to be initially formed from the right part of 20C 6-7 band. Neighbouring bands of 20C and 20D regions in the most developed puff are only partially decondensed and were detected as discrete compact chromatin clumps.
authors.forename: I S
authors.initials: IS
authors.lastname: Gubenko
authors.forename: R P
authors.initials: RP
authors.lastname: Subbota
authors.forename: V F
authors.initials: VF
authors.lastname: Semeshin
mesh_terms: D000818:Animals; D002843:Chromatin; D002874:Chromosome Mapping; D002875:Chromosomes / Q000648:ultrastructure; D004330:Drosophila / Q000235:genetics*; D006358:Hot Temperature; D007814:Larva; D008854:Microscopy, Electron; D013329:Structure-Activity Relationship
chemical_list: D002843:Chromatin
vernacular_title: "Neobychnyĭ" aktiviruemyĭ v usloviiakh stressa puf 20CD Drosophila virilis: tsitologicheskaia lokalizatsiia teplochuvstvitel'nogo lokusa i osobennosti reaktsii na teplovoĭ shok.