Light and electron microscopic in situ hybridization: non-radioactive labeling and detection, double hybridization, and combined hybridization-immunocytochemistryD Egger, M Troxler and K Bienz Institute for Medical Microbiology, University of Basel, Switzerland. We performed light and electron microscopic in situ hybridization, according to the same protocol and without pretreatment of sections, on Lowicryl- and LR Gold-embedded cells. Digoxigenin (DIG)- or biotin- labeled riboprobes were visualized by direct or indirect immunodetection using commercially available gold-antibody conjugates with 0.8-10-nm gold grains. At the ultrastructural level, the main findings were that DIG-labeled probes gave a slightly higher labeling intensity (grains per signal) than biotin. The direct detection method produced a more compact signal, which led to better resolution at medium and high magnifications. Labeling intensities of all gold grain sizes were essentially equal. Grain sizes of 5 nm and larger were highly preferable because available enhancement methods are unsatisfactory for ultrasmall grains. The optimized immunodetection protocols are suitable for double hybridization with two different probes and for combined hybridization and immunocytochemistry.
Volume 42,
Issue 6,
pp. 815-822,
06/01/1994
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R. Y. Osamura, Y. Itoh, and A. Matsuno Applications of Plastic Embedding to Electron Microscopic Immunocytochemistry and In Situ Hybridization in Observations of Production and Secretion of Peptide Hormones J. Histochem. Cytochem., July 1, 2000; 48(7): 885 - 892. [Abstract] [Full Text] |
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F. Bussière, J. Lehoux, D. A. Thompson, L. J. Skrzeczkowski, and J.-P. Perreault Subcellular Localization and Rolling Circle Replication of Peach Latent Mosaic Viroid: Hallmarks of Group A Viroids J. Virol., August 1, 1999; 73(8): 6353 - 6360. [Abstract] [Full Text] |
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E.-L. Punnonen, C. Fages, J. Wartiovaara, and H. Rauvala Ultrastructural Localization of ß-Actin and Amphoterin mRNA in Cultured Cells: Application of Tyramide Signal Amplification and Comparison of Detection Methods J. Histochem. Cytochem., January 1, 1999; 47(1): 99 - 112. [Abstract] [Full Text] |
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