Search Thermo Fisher Scientific
Search Thermo Fisher Scientific
Katalognummer | Menge |
---|---|
A10436 | 1 mg |
The non-reactive Alexa Fluor and Alexa Fluor hydrazide derivatives may be used for injection site visualization. Other options include the fluorescent polystyrene microspheres, FluoSpheres, and dye-conjugated dextrans. The hydrazide derivatives and 'fixable' dextrans are retained by cross-linking using an aldehyde-based fixative.
Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.
Confirm that the tracer you are using crosslinks to proteins or has a primary amine for fixation-either a hydrazide, lysine fixable dextran, or a protein conjugate.
Use aldehyde-based fixatives to cross link the amines on the tracer.
Inject a larger amount or higher concentration of the tracer. Tracers are generally injected at 1-20% concentrations (10 mg/mL or higher).
Confirm that you are using the correct fluorescent filter for detection. You can perform a spot test by pipetting a small amount of the undiluted stock solution of the tracer onto a slide, then view under the filter you are using on your microscope. This will confirm if the tracer fluorescence can be detected and the fluorescent microscope filter is working properly.
Review tissue fixation and handling procedures to confirm if any reagents or processing procedures could be affecting the tracer.
Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.
Observing both types of transport is typical for biocytin. The conjugated cholera toxin subunit B products have been observed to travel only retrogradely.
Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.
Lucifer Yellow CH is a hydrazide, so any of our Alexa Fluor or fluorescent hydrazides could potentially be used. A listing of them can be found here. (https://www.thermofisher.com/us/en/home/life-science/cell-analysis/cell-tracing-tracking-and-morphology/neuronal-tracing/hydrazides-biocytins.html#prd)
Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.
Factors to consider are size of tracer, method of delivery (injection, direct application to tissue, etc.), and if the tracer needs to be fixable. Here are some links to details about the various classes of neuronal tracers we offer and how to choose between them:
Neuronal Tracing (https://www.thermofisher.com/us/en/home/life-science/cell-analysis/cell-tracing-tracking-and-morphology/neuronal-tracing.html)
Choosing a Tracer (https://www.thermofisher.com/us/en/home/references/molecular-probes-the-handbook/fluorescent-tracers-of-cell-morphology-and-fluid-flow/choosing-a-tracer.html)
Imaging Analysis (http://assets.thermofisher.com/TFS-Assets/BID/Reference-Materials/bioprobes-50-journal.pdf)
Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.
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