title: [ELECTRON MICROSCOPIC STUDIES ON RICKETTSIA PROWAZEKII IN ULTRATHIN SECTIONS OF THE YOLK SAC].
mesh_terms: D000818:Animals; D002642:Chick Embryo; D004583:Electrons; D008853:Microscopy; D008854:Microscopy, Electron; D012106:Research; D012283:Rickettsia prowazekii; D015017:Yolk Sac
keywords: CHICK EMBRYO; EXPERIMENTAL LAB STUDY; MICROSCOPY, ELECTRON; RICKETTSIA PROWAZEKII
vernacular_title: ELEKTRONNOMIKROSKOPICHNE VYVCHENNIA RYKETSI I PROVACHEKA V UL'TRATONKYKH ZRIZAKH ZHOVTKOVYKH MISHKIV.