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Even in an apparently homogeneous population of cells there are considerable differences between individual cells. A response to a stimulus of a cell population or tissue may be consistent and gradual while the single-cell response might be binary and apparently irregular. The origin of this variability may be preprogrammed or stochastic and a study of this phenomenon will require quantitative measurements...
Experiments using quantitative real-time PCR to test hypotheses are limited by technical and biological variability; we seek to minimise sources of confounding variability through optimum use of biological and technical replicates. The quality of an experiment design is commonly assessed by calculating its prospective power. Such calculations rely on knowledge of the expected variances of the measurements...
Quantitative real-time PCR (qPCR) is a frequently used, sensitive and accurate method to study gene expression profiles. However, its throughput was so far limited for routine laboratories to 384 reactions per run based on the limitations of the available instruments. Recently, the LightCycler® 1536 Instrument was launched providing a high-throughput solution for qPCR with the analysis of 1536 reactions...
The importance of high quality sample material, i.e. non-degraded or fragmented RNA, for classical gene expression profiling is well documented. Hence, the analysis of RNA quality is a valuable tool in the preparation of methods like RT-qPCR and microarray analysis. For verification of RNA integrity, today the use of automated capillary electrophoresis is state of the art. Following the recently published...
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