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A genomic library of Wuchereria bancrofti was examined for the presence of the 22 nucleotide spliced leader (SL) which plays a vital role in the maturation of the 5′ end of certain mRNAs through the addition of a small spliced leader (SL) exon and also in the generation of monocistronic mRNA from initial polycistronic transcripts in nematodes. Here, we report the characterization of three SL RNA genes...