Dual Fluorescent Immunolabeling
Dual Fluorescent Immunolabeling - Related Videos
03:16
Dual Fluorescence Imaging to Identify Differentiated Oligodendrocytes
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2025
Source: Schott, J. T., et al. Preparation of Rat Oligodendrocyte Progenitor Cultures and Quantification of Oligodendrogenesis Using Dual-infrared Fluorescence Scanning. J. Vis. Exp. (2016). This video demonstrates the use of dual fluorescence imaging to evaluate the differentiation of oligodendrocytes from precursor cells (OPCs) isolated from a rat pup brain. The process includes fixing the cells, labeling specific markers with primary and fluorophore-conjugated secondary antibodies, and...
11:21
Photoconversion of Purified Fluorescent Proteins and Dual-probe Optical Highlighting in Live Cells
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Cited by 5 •
2010
This protocol describes a general approach to perform photoconversion of fluorescent proteins on a confocal laser scanning microscope. We describe procedures for the photoconversion of puried protein samples, as well as for dual-probe optical highlighting in live cells with mOrange2 and Dronpa.
09:23
Combining Double Fluorescence In Situ Hybridization with Immunolabelling for Detection of the Expression of Three Genes in Mouse Brain Sections
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Cited by 15 •
2016
Localizing gene expression to specific cell types can be challenging due to the lack of specific antibodies. Here we describe a protocol for simultaneous triple detection of gene expression by combining double fluorescence RNA in situ hybridization with immunostaining.
02:19
Immunolabeling of Neuronal Membrane Proteins in a Freeze-fractured Specimen of Mouse Brain Tissue
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2025
Source: Schönherr, S., et. al. Combined Optogenetic and Freeze-fracture Replica Immunolabeling to Examine Input-specific Arrangement of Glutamate Receptors in the Mouse Amygdala. J. Vis. Exp. (2016)This video demonstrates the immunolabelling of freeze-fractured replicas of mouse brain tissue for electron microscopy. The fractured and coated replicas are digested to expose receptors. Primary and gold-tagged secondary antibodies are added to label specific neuronal membrane receptors. The replica...
09:30
Dual Somatic Recordings from Gonadotropin-Releasing Hormone (GnRH) Neurons Identified by Green Fluorescent Protein (GFP) in Hypothalamic Slices
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Cited by 3 •
2010
Activity in neuronal systems often requires synchronous action potential discharges from neurons within a specific population. For example, pulses of gonadotropin-releasing hormone (GnRH) likely require coordinated activity between GnRH neurons. We present our methodological approach for reliably obtaining simultaneous electrophysiological recordings from the diffusely distributed GnRH neurons.
FAQs
Distinct fluorophores make the two targets separately visible because each produces its own excitation and emission signal. Researchers can therefore inspect each channel independently and compare their locations in the same sample. This separation is central to determining whether markers occupy overlapping cellular regions or show different distributions.
Antibody specificity assigns each fluorescence channel to a particular protein or cellular marker. In a direct format, the antibody is linked to the fluorescent dye; in an indirect format, the target-specific antibody and fluorescent labeling are separate components. This design allows two markers to be examined together while preserving their distinct identities.
Comparing channels can reveal more than simple presence or absence. If two signals appear in the same cellular compartment, the result supports a shared spatial distribution; if they occupy different regions, it indicates distinct localization patterns. In neural tissue, this comparison helps relate molecular markers to cellular organization without relying on a single marker alone.
A basic workflow begins with a biological sample, labels it with target-specific antibodies associated with spectrally distinct dyes, and then uses microscopy to record the resulting fluorescence. Separate excitation and emission signals are examined as individual channels before being compared. The outcome is a paired spatial view of both markers within the same sample.
In neuroscience, the method can distinguish neuronal cells from glial cells when the selected markers identify those populations. It can also help identify neuronal subtypes by comparing marker patterns across cells. These applications connect molecular labeling with the organization of nervous tissue, making cellular identity and distribution visible within the same microscopic preparation.
Dual fluorescent immunolabeling is useful when a study asks how two markers relate to neural signaling pathways, tissue organization, or disease-associated changes. By comparing channel distributions, investigators can assess co-expression or shared compartments and examine how marker patterns differ across nervous tissue. The resulting spatial information adds context that single-marker imaging cannot provide.