Abstract
Feasibility of the combination of the immunogold-silver staining method (IGSS) and computer-aided image analysis was assessed for the detection of antigen in an immunostained, paraffin-embedded section. Using low-temperature IGSS, we stained a specimen of human oral squamous cell carcinoma with a monoclonal antibody, PC 10, against a proliferating cell nuclear antigen (PCNA/cyclin), and the section was analyzed by ACAS 570 interactive laser cytometry. The PCNA-positive cells, exhibiting a heteromorphic texture, were contrasted by the dark staining of their nuclei, but showed heterogeneity in staining intensity from cell to cell. Using a conventional microscope light source rather than a laser, and by employing the COMPLEMENT DATA program (which permits inversion of the data values) installed in the ACAS 570 software system, we were able to obtain a ‘complemental image’ which replicated the real immunohisto-morphology. Approximately 30–35 cells from three different areas in the same section were selected by DEFINE CELL and MARK AREA programs, and quantitative image analysis was performed in terms of cell integrated value, area, perimeter, and shape factor indicated in histogram form. The combined utilization of IGSS with computer-aided image analysis was demonstrated to offer a crucial advantage for the quantitative assessment of immunostained sections.
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Tajima, Y., Utsumi, N., Kato, K. et al. Computer-aided image analysis applied to immunogold-silver staining: evaluation of proliferating cell nuclear antigen (PCNA)-reactive sites in paraffin sections. Histochemistry 102, 177–181 (1994). https://doi.org/10.1007/BF00268894
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DOI: https://doi.org/10.1007/BF00268894