Protocol used to for immunohistochemistry on paraffin-embedded sections. Based on use of microwave energy to effect antigen retrieval. The immunohistochemistry procedure, is for use of Biomeda's HistoScan kit based on a streptavidin-peroxidase/biotinylated second antibody detection system with 3-amino, 9-ethylcarbazole (AEC) as chromogen. Undoubtedly, other kits or home-made reagents will also work . - [Read Antigen Retrieval for Immunohistochemistry with Paraffin-Embedded Tissues Protocol]
A silver stain to demonstrate neurofibrillary tangles, nerve fibers and senile plaques in Alzheimer's disease. The nerve fibers are sensitized with a silver solution. The sections are treated with ammoniacal silver, and then reduced to a visible metallic silver. - [Read Bielschowsky Technique for Senile Plaques Protocol]
Once tissues are fixed and permeabilized, the antibodies are added. These antibodies can be labeled directly or detected by a labeled secondary reagent. For indirect detection, any reagent that binds specifically to the primary antibody can be "tagged" and used to locate the antibody. The possible reagents include anti-immunoglobulin antibodies, protein A or G, or, if the first antibody is labeled with biotin, streptavidin. They can be labeled with enzymes or gold. - [Read Binding Antibodies to Tissue Sections Protocol]
Protocol to demonstrate amyloid deposits in tissue sections. When stained with the Congo Red Stain the amyloid, with the aide of polarizing lenses, will birefringe an apple green color. Under the microscope. - [Read Congo Red Putcher's Modification Amyloid Protocol]
Counterstains are used to help differentiate the various cell types of subcellular structures seen in cell staining. They are essential for tissue sections, allowing the identification of the cell types, but also may be helpful in other staining reactions. - [Read Counterstains Protocol]
Method assesses cellular mRNA transcripts in tissue sections and cell cultures using unique short anti-sense primers directed against sequences in particular protein(s). The unlabeled synthetic cDNA oligonucleotide primers are extended complementary to a sense mRNA transcript using reverse transcriptase and labeled through incorporation of a fluorescent-labeled dUTP nucleotide base. This procedure provides rapid detection of low abundance mRNA messages that can be related to other cellular.... - [Read Fluorescent In Situ Transcription in Cells and Tissues Protocol]
The technique has many advantages—plasmids may be used for delivery, DNA theoretically can be delivered to any cell type, and genes may be delivered to cells in vitro, ex vivo, or in vivo. DNA-coated gold particles are distributed evenly along the length of the tubing, which is subsequently cut into short sections of cartridges to be used in a gene gun. The Helios Gene Gun uses a pulse of helium to launch the DNA-coated particles, spreading them onto the target cells. - [Read Gene Delivery to Skin Using Biolistics Protocol]
Information on histotechniques. Includes: Fixation - types of fixatives; factors affecting fixation; General usage of fixatives; Tissue Processing; Sectioning; Frozen Sections; Staining; H and E staining; Coverslipping; Decalcification; Artefacts in Histologic Sections; Problems in Tissue Processing. - [Read Histotechniques Fixation]
After fixation, frozen sections are immunostained under RNase-free conditions using a rapid three-step streptavidin-biotin technique followed by dehydration. The immunostained sections are ready for LCM. Includes: Development of Immuno-LCM. - [Read Immuno-Laser Capture Microdissection Protocol]
There are several strategies to visualize the antibody. For transmitted light microscopy, color development substrates for enzymes are often used. The antibody can be directly
labeled with the enzyme. However, such a covalent link between an antibody and an enzyme might result in a loss of both enzyme and antibody activity. For these reasons
several multistep staining procedures have been developed, where intermediate link antibodies are used. In this protocol use the Vectastain ABC-kit. - [Read Immunocytochemistry in Free-Floating Sections Protocol]
B or T cells in suspension, adherent cells on chambered coverglass or chamberslides, cryostat sections of unfixed, OCT embedded tissue. Susan Anderson. - [Read Immunofluorescence / confocal microscopy]
Useful techniques to circumvent disruption of tissue structure in the analysis of gene expression are LCM and LDM. While they require specialized microscopes and systems, they are similar in that freshly-cut frozen tissue sections can be microdissected using either a general histological stain (like H&E) or by staining with fluorescently conjugated antibodies. The LCM system by Arcturus involves... - [Read Immunofluorescent Staining for the Laser Microdissection of Individual Cells Protocol]
Paraffin Embedding Protocol for molecular profiling. This Paraffin Embedding Protocol describes the processing of the tissues into sections following ethanol fixation. Molecular profiling (MP) is a technique that is used to visualize the global patterns of RNA expression or protein expression in various cell types and disease processes.