In the past two decades, there have been many revolutions in light microscopy techniques made possible by improvements in optics, detector technology, and computers. Furthermore, there is no indication that the rate of development of new equipment is slowing down. Here we attempt to provide an overview of available options and important considerations applicable to imaging Drosophila cells and tissues. - [Read Selection of Appropriate Imaging Equipment and Methodology for Live Cell Imaging in Drosophila]
In an attempt to accurately measure DNA content with simultaneous preservation of cell surface markers, we have utilized gentle ethanol treatment techniques, which permeablize cells with minimal loss of surface antigen expression and antibody-antigen association. For some cell types, the presence of apoptotic cells based on reduced DNA content can also be detected. One such technique employs the addition of ethanol to cells previously resuspended in high concentrations of fetal bovine serum... - [Read Simultaneous Analysis of DNA Content and Surface Immunophenotype Protocol]
Sterile technique is one of the most important steps in insuring consistent results when employing recombinant DNA and protein expression techniques. Dr. Chazin Lab, Center for Structural Biology, Vanderbilt Univ. - [Read Sterile Technique for DNA and Protein Expression]
Protocol describes a target selective S. aureus whole cell assay that combines agar-diffusion and protein over expression techniques. This agar based two-plate differential sensitivity assay was used to help confirm the newly discovered antibiotic platensimycin inhibited bacterial growth by specifically targeting the essential FASII enzyme FabF6. - [Read Target Specific Whole Cell Assay for Antibacterial Drug Discovery Protocol]
Two distinct modes of cell death, apoptosis and necrosis, can be distinguished on the basis of differences in
morphological, biochemical, and molecular changes occurring in the dying cells. Report the development of flow cytometric techniques that permit concomitant detection of apoptosis and cellular DNA content or BrdU content analysis. - [Read The Use of Flow Cytometry for Concomitant Detection of Apoptosis and Cell Cycle Analysis]
This procedure, which uses a root transformation protocol, provides a rapid method for assessing gene expression in Arabidopsis roots. It is useful for testing promoter:reporter gene constructs, for expressing genes, the overexpression of which is lethal in whole plants, and for transforming the roots of plants that are recalcitrant to conventional transformation techniques. The protocol has been used successfully with Ws, No-0, and RLD ecotypes. - [Read Transgene Expression in Regenerated Roots]
The protocol gives general considerations for the design of targeting vectors for transgenic mice. The protocol shares tips in the design of knock-out and knock-in vectors and some of their strategies for producing homologously recombined embryonic stem cells.