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. 2010 Jun 3;11:352. doi: 10.1186/1471-2164-11-352

Figure 1.

Figure 1

Label protocol and control genes. (a) Scheme of the labeling protocol, which consisted of the following steps: (I) extraction of polyA + RNA, (II) first-strand cDNA synthesis employing a chimeric primer including the T7 promoter sequences and a stretch of random bases, (III) second-strand cDNA synthesis, (IV) in vitro transcription using the T7 RNA polymerase in the presence of a labeled ribonucleotide (Cy3- or Cy5-CTP). (b) Probe intensities for the yeast control gene fragment YML059C, demonstrating no 3'- or 5'-biased labeling.