events Protocols

Category: Cell Biology and Cell Culture

Flow assays offer visualization of cell adhesion under wall shear stress. Visualization of the different events of cell adhesion can be quantified by selective image acquisition and subsequent image processing. Flow assays are suited for adhesive events which occur very rapidly in a time scale shorter than that of most static adhesion assays. Also, events subsequent to the initial events can be studied such as cell stabilization and spreading giving some insight into the kinetics of cell-cell. - [Read Dynamic Flow Assay for Cell Adhesion in a Parallel Plate Flow Chamber]

Category: Cell Biology and Cell Culture: Cell Adhesion Protocols

Flow assays allow visualization of cell adhesion under well-defined wall shear stress. Visualization of the events of cell adhesion are quantified by selective image acquisition and image processing. Events subsequent to the initial events can be studied such as cell stabilization and spreading. John T. Patton~GlycoTech Corporation, Rockville, Maryland - [Read Dynamic Flow Assay in a Parallel Plate Flow Chamber]

Category: Immunology: B Cell Protocols

B cell activation can be quantitated indirectly by assaying antibody production or directly by measuring cellular changes that occur immediately after exposure to an activation signal. Provides methods for the latter (direct) approach--namely, methods for quantifying early parameters of B cell activation such as increases in intracellular ionized calcium concentration [Ca2+]I, cell size, and MHC class II-antigen expression. - [Read Early Events in B Lymphocyte Activation Protocol]

Category: Cell Biology and Cell Culture: Flow Cytometry Protocols: Cell Cycle Analysis Protocols

Exponentially growing cells are asynchronous with respect to the cell cycle stage. Detection of cell cycle-related events is improved by enriching the culture for cells at the stage during which the particular event occurs. Methods for synchronizing cells are provided here, including those based on morphological features of the cell. - [Read Methods for Synchronizing Cells at Specific Stages of the Cell Cycle]

Category: Cell Biology and Cell Culture: Cell Viability Protocols

The MTT Cell Proliferation Assay measures the cell proliferation rate and conversely, when metabolic events lead to apoptosis or necrosis, the reduction in cell viability. The number of assay steps has been minimized as much as possible to expedite sample processing. The MTT Reagent yields low background absorbance values in the absence of cells. Includes: Determining optimal cell counts, performing an assay, data interpretations and troubleshooting. - [Read MTT Cell Proliferation Assay Protocol]

Category: Microscopy Protocols: In Vivo Imaging Protocols

Sophisticated fluorescence microscopy methods & equipment, now allow cellular events to be studied at high resolution in living material. The studying of living fly tissues presents unique difficulties in keeping the cells alive, introducing fluorescent probes, & imaging through thick hazy cytoplasm. This protocol outlines the preparation of major tissue types amenable to study by time-lapse cinematography and different methods for keeping them alive. - [Read Time-Lapse Cinematography in Living Drosophila Tissues: Preparation of Material]