Sensitive detection of immunogold-silver staining with darkfield and epi-polarization microscopyM De Waele, W Renmans, E Segers, K Jochmans and B Van Camp Department of Hematology, University Hospital, Free University of Brussels, Belgium. We evaluated the contribution of darkfield and epi-polarization microscopy to the detection of leukocyte cell surface antigens with immunogold-silver staining (IGSS). Lymphocyte cell surface differentiation antigens were labeled with monoclonal antibodies and IGSS as described for brightfield microscopy. In darkfield and epi- polarization microscopy the labeling appeared as bright spots on a dark background. The sensitivity of detection was much higher than that of brightfield microscopy. Sixteenfold higher dilutions of the monoclonal antibody could be used to detect all cells expressing the antigen in the cell suspension. However, non-specific staining was also better visualized. The latter could be reduced to a level comparable to that of brightfield microscopy only by use of weaker labeling conditions. A 25% reduction of the silver enhancement time was necessary for this purpose. However, these weaker labeling conditions also reduced the intensity of the specific staining. Therefore, the efficiency of IGSS, as detected with darkfield and epi-polarization microscopy, was only fourfold greater than that found with brightfield microscopy or that of an immunofluorescence procedure. Especially in combination with transmitted light, to improve cell identification, epi-polarization microscopy is a reliable and sensitive method for detection of immunogold-silver-labeled cell surface antigens for diagnostic and research purposes.
Volume 36,
Issue 6,
pp. 679-683,
06/01/1988
|
|||||||||||||||||||||||||||||||||||||||||||||||||
![]() |
L. Ermert, A. C. Hocke, H.-R. Duncker, W. Seeger, and M. Ermert Comparison of Different Detection Methods in Quantitative Microdensitometry Am. J. Pathol., February 1, 2001; 158(2): 407 - 417. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. M. Robinson and D. D. Vandre Efficient Immunocytochemical Labeling of Leukocyte Microtubules with FluoroNanogold: An Important Tool for Correlative Microscopy J. Histochem. Cytochem., January 1, 1997; 45(5): 631 - 642. [Abstract] [Full Text] [PDF] |
||||
![]() |
O. Jones, D. Kunze, and K. Angelides Localization and mobility of omega-conotoxin-sensitive Ca2+ channels in hippocampal CA1 neurons Science, June 9, 1989; 244(4909): 1189 - 1193. [Abstract] [PDF] |
||||
| Guidelines | Subscriptions | About | exPRESS - Current - Archive | Business Information | Contact |