Protocol uses Rnase protection to detect short interfering RNAs (siRNAs) in RNA preparations from Caenorhabditis elegans. SiRNAs can also be detected by northern blot. However, the Rnase protection assay seems to be more sensitive. - [Read Detection of siRNA in C. elegans Using Rnase Protection Protocol]
The protocol consists of a method for the generation of cytoplasmic extracts from mammalian cells (in this case, 293T cells) without the disruption of polyribosomes, the separation of ribosomal components and polyribosomes by sucrose gradient centrifugation, the isolation of mRNA from these fractions, and detection of mRNA by Northern blot analysis. - [Read Northern Blot Analysis of mRNA From Mammalian Polyribosomes Protocol]
Northern blot protocol for the detection of RNA in Neurospora. Includes: Extract RNA from tissue powder; Electropheresis and transfer RNA; Preparing the membrane for probing and preparation of a riboprob.; Hybridization. - [Read Northern blot Protocol for the Detection of RNA in Neurospora]
Protocol for northern hybridization. Protocol describes how to carry out northern hybridization at high stringency in phosphate-SDS-buffers. Although a wide variety of formats are available, hybridization is usually performed in heat-sealable bags, roller bottles, or plastic boxes, as described here. - [Read Northern Hybridization Protocol]
Separation of RNAs according to size is the first stage in northern blotting and hybridization. The method described in this protocol uses formaldehyde to denature the RNA, ethidium bromide to stain it, and electrophoresis through agarose gels containing 2.2 M formamide to separate the resulting formaldehyde-RNA-ethidium adducts. - [Read Separation of RNA According to Size: Electrophoresis of RNA through Agarose Gels Containing Formalde]