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Identification of Asr9 and Ssr9 sRNAs by Northern blots. Total RNA from strains KT2440 and F1 was resolved in a denaturing polyacrylamide gel next to a DIG-labeled RNA size ladder (M), transferred to a membrane, and the sRNAs detected with probes for Asr9 (left) or Ssr9 (right), together with a probe for the ribosomal 5S RNA as control. The deduced approximate size for Asr9 or Ssr9 is indicated in red font.
