Agrobacterium-Mediated Transformation in Rice Protocol Protocol for Agrobacterium-mediated transformation in rice. Agrobacterium-mediated rice transformation method that is applicable to easily cultured varieties in addition to elite japonica varieties that are more difficult to culture. Using this method, transgenic rice plants can be obtained in about 2–3 months with a transformation frequency of 30–50%, both in easily cultured varieties and recalcitrant elite japonica rice.
CGH of Direct Labeled Test DNA vs Normal DNA Protocol This CGH Protocol is used for DNA of good quality when available in sufficient amounts. We usually do replicate hybridizations using samples labeled "inversely" (reversing the label for test and normal DNA's). If appreciable artifact occurs, then alternative labels are tried.
Karyotyping Protocol Karyotyping is a valuable research tool used to determine the chromosome complement within cultured cells. It is important to keep in mind that karyotypes evolve with continued culture. Because of this evolution, it is important for the interpretation of biochemical or other data, that the karyotype of a specific sub-line be determined.
Methylation-Specific Digital Karyotyping Protocol Protocol describes a recently developed method — methylation-specific digital karyotyping (MSDK) — that enables comprehensive and unbiased genome-wide DNA methylation analysis. Using a combination of a methylation-sensitive mapping enzyme (for example, AscI) and a fragmenting enzyme (for example, NlaIII), short sequence tags can be obtained and uniquely mapped to genome location.
Placenta Specific Gene Manipulation by Transducing Zona-Free Blastocyst using Lentiviral Vector Details a placenta specific gene manipulation by transducing blastocysts with lentiviral vectors1. After a removal of zona pellucida which functions as a physical barrier, trophoblast cells lying outermost layer of blastocyst were transduced from outside with high-titer lentiviral vectors. As most placental cells descend from trophoblast cells while fetus originated from inner cell mass, transgene expression can be observed in trophoblast cells from preimplantation stages and in placenta...
Preparation of Chromosome Spreads An ideal method of tissue preparation ensures both good specimen morphology and that the target molecules are in the optimum state for probe access and hybridization. DNA:DNA in situ hybridization is usually carried out on chromosome spread preparations where chromosome and nuclei are released from cells and spread on a glass microscope slide. This method yields well separated and enlarged chromosomes with good morphology which can be analyzed in transmitted light or fluorescence microscopes.
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