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Complete sequence of the C.fasciculata rDNA IGS. Restriction sites mentioned in the text are underlined (SalI and PstI). Repeated sequences R1–R4 are presented in uppercase and bold. Tandem direct repeats (19mers) are underlined with every second copy set in bold and italics. RT stop sites (TIS, A′ and A0) are uppercase, bold and underlined. Also underlined are complementary 7 nt sequences flanking a putative 13 nt loop that contains the heterogeneous A′ site.
