Enzyme-linked reagents give excellent sensitivity and use a simple light microscope for detection. A range of enzymes is available, but for staining in situ, horseradish peroxidase will suit most needs. Diaminobenzidine (DAB) is one of the most sensitive substrates for horseradish peroxidase. It yields an intense brown product that is insoluble in both water and alcohol. It can be made more sensitive by adding metal salts such as cobalt or nickel to the substrate solution. - [Read Antibody Addition to Drosophila Specimens and Detection Using Enzyme-Linked Reagents Protocol]
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 described here produces chromatin with regularly spaced nucleosomes having physiological nucleosome repeat lengths; something that can be difficult to achieve with purified components. In addition, chromatin assembled with the S-190 Chromatin Assembly Extract contains the ATP-dependent chromatin remodeling factors necessary for efficient transcription. - [Read Chromatin Assembly on Template DNA with Transcription Factors and Drosophila S-190 Chromatin Assembl]
Protocol describes how subcellular-sized particles are accelerated to high velocity to carry double-stranded RNA (dsRNA) into Drosophila embryos. The major advantage of this procedure over microinjection (Microinjection of dsRNA into Drosophila Embryos) is that particle bombardment is easier and faster to perform. In addition, the mechanical trauma received is far less than by microinjection, allowing better survival of embryos and fewer phenotypic artifacts. - [Read Delivery of dsRNA into Drosophila Embryos by Gene Gun Protocol]
Protocol for detection of even-skipped transcripts in drosophila embryos with PCR/DIG-labeled DNA probes. This protocol has been used to detect the transcript distribution of a number of genes by in situ hybridization, including evenskipped and seven-up, in whole mount Drosophila
embryos, and engrailed Antennapedia in whole mount grasshopper embryos. Includes: Probe labeling; Evaluation of labeling reaction; Preparation of embryos, hybridization and detection.
- [Read Detection of Even-Skipped Transcripts in Drosophila Embryos with PCR/DIG-Labeled DNA Probes Protocol]
Protocol for the dissection of Drosophila CNSs. Includes: Tools; Dissection of the CNS; Dissecting larval CNSs; Dissecting early pupae; Dissecting mid pupae; Dissecting late pupae; Dissecting the whole CNS; Dissecting only the brain proper; Taking the pupa out of the puparium. - [Read Dissection of Drosophila CNSs Protocol]
A single step RNA isolation protocol using Phenol Chloroform Extraction and Acid Guanidinium Thiocyanate. This RNA isolation method uses the fact that guanidinium thiocyanate can simultaneously lyse the cells and inactive cellular RNAses during the initial RNA isolation step allow a single step in the method.