ResourceSpectroscopy
StainFree Technology for Cellular Image Analysis without Fluorescent Dyes
StainFree Technology for Cellular Image Analysis without Fluorescent Dyes
8 Sept 2015This application note demonstrates how StainFree Technology enables cell counting that is comparable to nuclear and whole-cell counts obtained using fluorescent dyes. IC50 curves for compound-treated cells obtained through StainFree analysis are also presented as an alternative to using fluorescent reagents. Imaging cell-based assays typically requires the use of fluorescent probes that can be toxic to living cells or may only function in fixed cells. A label-free method for analyzing cell counts and cell confluence enables researchers to quantitatively monitor cell proliferation and health without time-consuming workflows that may disrupt cell viability.
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Fluorescence SpectroscopyFluorometers and spectrofluorometers (also called fluorescence spectrometers) are used to measure the intensity and wavelength of fluorescent light emitted from a sample after excitation by illumination. Spectrofluorometers utilize monochromators to select the desired wavelengths, whereas filter fluorometers employ a set of filters. Spectrofluorometers for measuring steady-state fluorescence and lifetime fluorescence (or time-resolved fluorescence) are available, as well as fluorescence microscopes and microplate readers. Find the best fluorescence spectroscopy products in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Gel Doc / Image AnalysisGel documentation (gel doc) or gel imaging systems are used for the analysis of proteins, antibodies and nucleic acid immobilized in polyacrylamide or agarose gels, membranes or microarrays. Explore a range of a gel imaging systems, densitometers, scanners, transilluminators or UV lamp + CCD cameras for your image analysis solutions. Colorimetric, fluorescent and/or radioisotopic samples can be visualized and documented for further analysis. See gel doc / Image analysis software for quantitative 1D and 2D analysis of your samples. Find the best gel doc / image analysis products in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Cell-Based AssaysCell-based assays are used to monitor the presence, quantity and activities of a desired cellular analyte including drug molecules or biomarkers. This can reveal information on cell health (apoptosis, cytotoxicity, viability and proliferation assays), cell metabolism, cell migration and cell signaling mechanisms. Find the best cell-based assay products, kits and equipment with our peer reviewed product directory: compare products, check customer reviews and receiving pricing direct from manufacturers.FluorescenceThe emission of fluorescence occurs when a photon of energy is supplied to a fluorescent chemical compound by an external source, causing it to become excited. Fluorescence can be detected and measured for different purposes using microplate readers, fluorescence microscopes, fluorescence scanners, and flow cytometers.Cell ImagingCell imaging can be achieved using a number of techniques including confocal microscopy, transmission electron microscopy, atomic force microscopy, and light sheet microscopy.Cell ProliferationCell proliferation refers to the process by which cells divide and multiply. This is a key concept in cancer research, tissue regeneration, and immunology studies. Explore cell proliferation tools in our peer-reviewed product directory; compare products, check reviews, and get pricing directly from manufacturers.Label-Free AnalysisDyesCell BiologyCell biology studies the structure, function, and behavior of cells. Understanding cellular processes is essential for research in areas such as cancer biology, stem cell research, and neurobiology. Techniques like flow cytometry, microscopy, and cell culture enable researchers to explore cellular mechanisms in detail. Browse our peer-reviewed product directory to find the best cell biology tools and equipment, compare products, check customer reviews, and get pricing directly from manufacturers.