Total RNAs are available from almost 200 different human adult and fetal normal tissues, human diseased and tumor tissues, as well as mouse, rat, and monkey tissues. Total RNAs are provided ready-to-use for Northern blotting, cDNA synthesis, RNA protection, and RNA differential display. United States Biological offers a comprehensive catalogue of total RNAs from human, mouse, rat, and monkey tissues for your research needs. We help you maximize your valuable research time, by enabling immediate study of genes of interest in many different tissues. , Total RNA isolation is performed using proprietary techniques. Contamination by RNase, genomic DNA polysaccharides, and proteoglycans has been effectively eliminated. The integrity of the total RNAs is assured by checking for a ratio of greater than 1/1 between 28S and 18S ribosomal RNA. We guarantee high efficiency reverse transcription. Features: Total RNA isolated from a wide variety of hard to obtain tissues , Decontamination of polysaccharide, proteoglycan, RNase, and genomic DNA , Extensive quality control procedures to ensure high quality , High efficiency reverse transcription , Available documentation of tissues" clinical histories (additional cost), Applications: Suitable for use in Northern Blot, RT-PCR, RACE cDNA synthesis, cDNA library construction, cDNA probe for profiling study in gene expression, RNA protection, primer extension, RNA display and Purification of mRNA. Other applications have not been tested. , Quality Control: 1. The integrity of the RNA is examined by visual inspectiuon for the presence of intact bands of 18s and 28s RNA when electrophoreses on a denaturing agarose gel. The quality and purity of total RNA were tested by spectrophotomer. (A260/280 = 1.8-2.1 detected in 10mM Tris-Cl, pH 7.5)., 2. The RNA is treated by DNAse I. and is tested as DNA free RNA by PCR., 3. cDNA synthesis is successfully performed by using this RNA as template. Storage and Stability: Aliquot to avoid repeated freezing and thawing and store at -70°C. Aliquots are stable for 6 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.