Protocol for antibody addition to Drosophila specimens and detection using fluorochrome-linked reagents. Fluorochrome-linked reagents should be used when high resolution is needed or if two antigens need to be localized simultaneously. Because of the thickness of fly specimens, detection requires access to a confocal microscope. - [Read Antibody Addition to Drosophila Specimens and Detection Using Fluorochrome-Linked Reagents Protocol]
Protocol uses specific antibodies coupled to one of four fluorochromes: fluorescein isothiocyanate (FITC), R-phycoerythrin (PE), peridinin chlorophyll-a (PcP),
and allophycocyanin (APC). These fluorochromes can be used simultaneously to stain and analyze the expression patterns of four different proteins in the same sample. The
fluorochrome stained cell populations are analyzed using a FACSCalibur dual-laser flow cytometer. - [Read Characterization of Cells by Flow Cytometry Protocol]
Fluorochromes can be used simultaneously to stain and analyze the expression patterns of four different proteins in the same sample. The fluorochrome stained cell populations are analyzed using a FACSCalibur dual-laser flow cytometer. - [Read Characterization of Cells by Flow Cytometry Protocol]
Protocol for Detection (FISH). TRITC, or Avidin Cy-5. For the probes labeled with digoxigenin, we usually first incubate with mouse-anti-digoxigenin, followed by incubation with sheep anti-mouse Cy5.5, or other fluorochrome conjugated antibodies. - [Read Detection FISH Protocol]
FIXATION and DNA Staining for Cell Cycle Analysis Protocol. This method of DNA staining utilizes ethanol to fix the cells and permeabilize the membrane, which allows the dye (Propidium Iodide) to enter the cells. Propidium Iodide (PI) is a DNA-binding fluorochrome that intercalates in the double-helix. Ribonuclease-A is used to eliminate the staining of double-stranded RNA. - [Read FIXATION and DNA Staining for Cell Cycle Analysis]
Protocol describes a method for evaluation of mitochondrial function using the fluorochrome CMXRos. CMXRos is sequestered by actively respiring mitochondria, but washed out when the mitochondrial membrane potential is lost. This analysis can be combined with the TUNEL technique or immunocytochemistry. - [Read Flow Cytometric Analysis of Mitochondrial Transmembrane Potential ({Delta}{Psi}m)]
Data for fluorescent dye properties. Includes: Fluorochrome, Excitation in(nm), Emission in (nm) and Color Application. - [Read Fluorescent Dye Properties Data]
Protocol for In situ hybridization to human metaphase chromosomes using DIG-, biotin-, or fluorochrome-labeled DNA probes and detection with fluorochrome conjugates. Includes: Pretreatment of metaphase spreads on slides; Denaturation and hybridization; Single color fluorescent detection with immunological amplification; Multicolor fluorescence in situ hybridization (Multicolor FISH); Results obtained with human metaphase chromosome spreads. - [Read In Situ Hybridization to Human Metaphase Chromosomes using DIG-, Biotin- or Fluorochrome-Labeled DNA]
Protocol describes a method for the evaluation of mitochondrial function using the fluorochrome CMXRos. CMXRos is sequestered by actively respiring mitochondria, but washed out when the mitochondrial membrane potential is lost. This analysis can be combined with the TUNEL technique or immunocytochemistry. - [Read Microscopic Analysis of Mitochondrial Transmembrane Potential Protocol]
One of the most important, but frequently overlooked, cell culture procedures is testing cultures for microbial contamination, especially mycoplasma. It is critical for every cell culture laboratory to only use cell lines that have been
carefully screened for mycoplasma. Fortunately, there is a simple fluorochrome DNA staining test that can detect both mycoplasma and virtually any other prokaryote contaminants. - [Read Mycoplasma Detection Using DNA Staining Protocol]
Paraformaldehyde Fixation of Cells protocol. This fixation method is good for cells labeled by fluorochrome-conjugated antibodies to membrane antigens. It will stabilize the light scatter and labeling for up to a week in most instances, allowing you to be more flexible in scheduling cytometer time. Furthermore, it inactivates most biohazardous agents, so it is important from a safety standpoint as well. Iowa University. - [Read Paraformaldehyde Fixation of Cells]
Protocol for phenotype-specific immunodetection of cyclins using 488/630 nm dual laser flow cytometry. This protocol is for use with the D and E cyclins and employs 488 nm argon laser excitation of propidium iodide and a FITC-conjugated phenotypic label, and 630 nm NeNe or diode laser excitation of the fluorochrome Cy5 to detect cell cycle-specific cyclin D expression. - [Read Phenotype-Specific Immunodetection of Cyclins using 488/630 nm Dual Laser Flow Cytometry Protocol]
The activity of ß-glucuronidase (GUS) can be accurately determined in intact plant tissue using 4-methylumbelliferyl ß-D-glucuronide (4-MUG) as a substrate. Upon hydrolysis by GUS, the fluorochrome 4-methyl umbelliferone (4-MU) is produced. This method is based on the permeability of both 4-MUG and 4-MU through plant tissue. It consists of incubation of the tissue with the reagent and quantification of the fluorescence emitted by 4-MU in the solution. GUS activity in each sample can be... - [Read Quantitative GUS Activity Assay in Intact Plant Tissue Protocol]