id author title date pages extension mime words sentences flesch summary cache txt cord-048222-1pq6dkl5 Imbeaud, Sandrine Towards standardization of RNA quality assessment using user-independent classifiers of microcapillary electrophoresis traces 2005-03-30 .txt text/plain 7001 313 47 With that prospect in mind, and with the aim of anticipating future standards by pre-normative research, we identified and tested two software packages recently developed to gauge the integrity of RNA samples with a user-independent strategy: one open source, the degradometer software for calculation of the degradation factor and 'true' 28S:18S ratio based on peak heights (24) and the freely available RIN algorithm of the Agilent 2100 expert software, based on computation of a 'RNA Integrity Number' (RIN) (25) . A RIN number is computed for each RNA profile (see Supplementary Table 4 online) resulting in the classification of RNA samples in 10 numerically predefined categories of integrity. The values of the mean fold changes, calculated according to the 2 ÀDDCt quantification method (see Materials and Methods), were found lower than 1.0, corresponding to the expression level (1·) in the sample exhibiting the highest RNA quality (Table 2 and Figure 5 ). ./cache/cord-048222-1pq6dkl5.txt ./txt/cord-048222-1pq6dkl5.txt