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  • Title: Resolution of a gold latensification-elon ascorbic acid developer for Ilford L4 emulsion.
    Author: Ginsel LA, Onderwater JJ, Daems WT.
    Journal: Histochemistry; 1979 Jul 11; 61(3):343-6. PubMed ID: 478993.
    Abstract:
    The electron-microscopical autoradiographical resolution of a gold latensification-elon ascorbic acid (GEA) developer for Ilford L4 emulsion was determined experimentally, using radioactive line sources of tritiated albumin (Heijnen and Geuze, 1977). For sections with a thickness of 62 nm (SD +/- 11), which were covered with a carbon layer about 5 nm thick and a slightly overlapping monolayer of L4 silver bromide crystals, the measured half-distance (HD) of resolution was 115 nm. This improvement in resolution, the high efficiency of the GEA developer for L4 emulsion (Wisse and Tates, 1968), and the excellent visibility of the cellular structures under the small silver grains, mean that the L4-GEA combination deserves preverence as a method for quantitative electron-microscopical autoradiography.
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