The development and application of a silver-aldehyde reaction for the study of chromosome ultrastructure

Fine structure of cell division in Psilotum nudum

“…This fibril has been reported in such a wide variety of organisms and in so many different cellular types (for reviews see Ris, 1961;Qrell, 1962;Swift, 1962) that Ris (1961) has called it the "elementary chromosome fibril". Higher magnification and better techniques demonstrate that this 100 A fibril is composed of two 35 -**0 A fibrils (Bopp-Hassenkamp, 1959i Shinke, 1959RLs, 1961;Brinkley, 1964). This is about as much as the electron microscope has been able to conclusively demonstrate about chromosome fine structure.…”