content Protocols

Category: Developmental Biology: Embryology Protocols

This protocol describes a method for isolating the ICM of blastocysts by selectively killing the outer trophectoderm (TE). - [Read Immunosurgery: Isolating the Inner Cell Mass (ICM) of Blastocysts Protocol]

Category: Mouse Protocols: Mouse Surgical Procedures Protocols

Protocol describes a method for isolating the ICM of blastocysts by selectively killing the outer trophectoderm (TE). - [Read Immunosurgery: Isolating the Inner Cell Mass (ICM) of Blastocysts Protocol]

Category: Cell Biology and Cell Culture: Apoptosis Protocols

Improved Detection of Apoptotic Cells in Archival Paraffin Sections: Immunohistochemistry Using Antibodies to Cleaved Caspase 3. Gown et al, 2002 - [Read Improved Detection of Apoptotic Cells in Archival Paraffin Sections: Immunohistochemistry Using Anti]

Category: Plant Biology Protocols: Arabidopsis Transformation Protocols

The plant transformation procedures described involve floral dip, vacuum infiltration, and spraying. They yield transformants at frequencies ranging up to several percent, with the most common frequency being 0.1%-1%. - [Read In Planta Transformation of Arabidopsis Protocols]

Category: Plant Biology Protocols: Plant Genetics Protocols

To accurately predict the activity of a transgene it is critical to understand its location and dynamics in the 3-D interphase nucleus. Developed in situ methods to visualize transgenes (including single copy genes) & their transcripts during interphase from different tissues & plant species. These techniques reduce the time necessary for characterization of transgene integration by eliminating the need for time-consuming segregation analysis and extend characterization to the interphase nucleus - [Read In Situ Methods to Localize Transgenes and Transcripts in Interphase Nuclei]

Category: Cytogenetics Protocols: In Situ Hybridization Protocols

In situ methods to visualize transgenes (including single copy genes) and their transcripts during interphase from different tissues and plant species. These techniques reduce the time necessary for characterization of transgene integration by eliminating the need for time-consuming segregation analysis, and extend characterization to the interphase nucleus, thus increasing the likelihood of accurate prediction of transgene activity. - [Read In Situ Methods to Localize Transgenes and Transcripts in Interphase Nuclei]

Category: Cloning Protocols: Mutagenesis Protocols

Protocol for in vitro mutagenesis using double-stranded DNA templates. Two oligonucleotides are used to prime DNA synthesis catalyzed by a high-fidelity thermostable polymerase on a denatured plasmid template. The two oligonucleotides both contain the desired mutation and occupy the same starting and ending positions on opposite strands of the plasmid DNA. - [Read In Vitro Mutagenesis Using Double-stranded DNA Templates: Selection of Mutants with DpnI]

Category: Yeast Protocols: Yeast Cell Synchrony Protocols

It is sometimes desirable to have an entire population of yeast cells that is growing synchronously or is arrested at a unique point in the cell cycle. - [Read Inducing Yeast Cell Synchrony: alpha-Factor Arrest Using bar1 Mutants Protocol]

Category: Yeast Protocols: Yeast Cell Synchrony Protocols

It is sometimes desirable to have an entire population of yeast cells that is growing synchronously or is arrested at a unique point in the cell cycle. - [Read Inducing Yeast Cell Synchrony: alpha-Factor Arrest Using Low Cell Concentration Protocol]

Category: Yeast Protocols: Yeast Cell Synchrony Protocols

It is sometimes desirable to have an entire population of yeast cells that is growing synchronously or is arrested at a unique point in the cell cycle. - [Read Inducing Yeast Cell Synchrony: alpha-Factor Arrest Using Low pH Protocol]

Category: Yeast Protocols: Yeast Cell Synchrony Protocols

It is sometimes desirable to have an entire population of yeast cells that is growing synchronously or is arrested at a unique point in the cell cycle. - [Read Inducing Yeast Cell Synchrony: Dilution of Stationary-Phase Cultures Protocol]

Category: Yeast Protocols: Yeast Cell Synchrony Protocols

It is sometimes desirable to have an entire population of yeast cells that is growing synchronously or is arrested at a unique point in the cell cycle. - [Read Inducing Yeast Cell Synchrony: Hydroxyurea Arrest Protocol]

Category: Yeast Protocols: Yeast Cell Synchrony Protocols

It is sometimes desirable to have an entire population of yeast cells that is growing synchronously or is arrested at a unique point in the cell cycle. - [Read Inducing Yeast Cell Synchrony: Nocodazole Arrest Protocol]

Category: Tetrahymena Protozoa Protocols

Mature Tetrahymena cells of opposite mating types are starved under appropriate salt conditions. The mating types are then combined to costimulate through cell-cell interaction. Loose pairs and then firm, irreversible pairs of cells of opposite mating types form. This method consistently results in a high percentage of pairing (usually greater than 80%) and good synchrony. - [Read Induction of Conjugation in Tetrahymena Protocol]

Category: Stem Cell Protocols: Stem Cell Injection Protocols

This protocol describes a method for injecting mouse blastocysts with embryonic stem (ES) cells to produce chimeras. - [Read Injecting Blastocysts Protocol]

Category: Avian Bird Protocols

Protocol describes a method for in ovo transfection of avian embryos with double-stranded RNA (dsRNA). The dsRNA is injected into the spinal cord of the embryo. Subsequent electroporation facilitates the cellular uptake of the dsRNA molecules. - [Read Injection of dsRNA and Electroporation in Avian Embryos Protocol]

Category: RNAi Technology Protocols: RNAi Avian Embryos Protocols

Protocol describes a method for in ovo transfection of avian embryos with double-stranded RNA (dsRNA).  The dsRNA is injected into the spinal cord of the embryo.  Subsequent electroporation facilitates the cellular uptake of the dsRNA molecules.  It may be necessary to optimize the stage of the embryo and the electroporation procedure to improve the effectiveness of in ovo RNAi—cell competence changes with differentiation. - [Read Injection of dsRNA and Electroporation in Avian Embryos Protocol]

Category: Mouse Protocols: Mouse Surgical Procedures Protocols

Protocol describes intraperitoneal (IP) injection, which is the typical means of introducing most compounds, such as hormones and anesthetics, into the mouse. - [Read Intraperitoneal (IP) Injection Protocol]

Category: Microinjection Protocols: Microinjection of Proteins Protocols

Activation and inactivation of proteins using photoactivation of caged peptides or proteins offer insights into cellular dynamics not achievable using genetic means. The ability to selectively alter the activity of a specific protein at a defined time and location inside a cell allows the correlation of changes in protein activity and cellular behavior. A caged compound, peptide, or protein is prepared by covalently linking it to a photolabile, protecting group. - [Read Introduction of Caged Peptide/Protein into Cells Using Microinjection Protocol]

Category: C. elegans Protocols: C. elegans Genetics Protocols

Protocol describes an easily scalable way of introducing double-stranded RNA (dsRNA) in Caenorhabditis elegans: feeding the nematode with bacteria that express dsRNA. When using an RNase-III-negative Escherichia coli strain (HT115), the efficiency of this method is comparable to the alternative. - [Read Introduction of Double-Stranded RNA in C. elegans by Feeding Protocol]

Category: RNAi Technology Protocols: RNAi C. elegans Protocols

Protocol describes an easily scalable way of introducing double-stranded RNA (dsRNA) in Caenorhabditis elegans: feeding the nematode with bacteria that express dsRNA.  When using an Rnase-III-negative Escherichia coli strain (HT115), the efficiency of this method is comparable to the alternative. - [Read Introduction of Double-Stranded RNA in C. elegans by Feeding Protocol]

Category: C. elegans Protocols: C. elegans Genetics Protocols

Double-stranded RNA (dsRNA) can be efficiently introduced into Caenorhabditis elegans by microinjection into the gonad, the gut, or the body fluid. The RNAi effect will spread within the nematode, exerting an effect beyond the site of injection. - [Read Introduction of Double-Stranded RNA in C. elegans by Injection Protocol]

Category: RNAi Technology Protocols: RNAi C. elegans Protocols

Double-stranded RNA (dsRNA) can be efficiently introduced into Caenorhabditis elegans by microinjection into the gonad, the gut, or the body fluid.  The RNAi effect will spread within the nematode, exerting an effect beyond the site of injection. - [Read Introduction of Double-Stranded RNA in C. elegans by Injection Protocol]

Category: C. elegans Protocols: C. elegans Genetics Protocols

Double-stranded RNA (dsRNA) can be introduced into Caenorhabditis elegans by soaking the animals in a solution of dsRNA. Alternative methods are dsRNA injection (see Introduction of Double-stranded RNA in C. elegans by Injection) and feeding the animals with bacteria that produce dsRNA. - [Read Introduction of Double-Stranded RNA in C. elegans by Soaking Protocol]

Category: RNAi Technology Protocols: RNAi C. elegans Protocols

Double-stranded RNA (dsRNA) can be introduced into Caenorhabditis elegans by soaking the animals in a solution of dsRNA.  Alternative methods are dsRNA injection and feeding the animals with bacteria that produce dsRNA. - [Read Introduction of Double-Stranded RNA in C. elegans by Soaking Protocol]