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3′ ends of su(f) 1.3-kb and 2.6-kb mRNAs. Sequences of cDNAs corresponding to the 1.3-kb (A) and to the 2.6-kb (B) RNAs from D. melanogaster (mel) and from D. virilis (vir). In B, AAUAAA signals are in bold and GU-rich sequences are underlined.
