Repetitive sequences and hairpin-like structures in giant RNA of pigeon erythroid cells

In giant molecules (>45 S) of HnRNA from pigeon bone marrow and peripheral blood erythroid cells a correlation is demonstrated between the amounts of hairpin-like structures and the sequences transcribed from the DNA repetitions. The same correlation is observed in the >45 S poly(A)⁺ and poly(A)^- subfractions.Abbreviations HnRNA heterogeneous nuclear RNA - poly(A)⁺ RNA RNA molecules containing polyadenylic acid sequences - poly(A)^- RNA RNA molecules which do not contain polyadenylic acid sequences - dsRNA double-stranded RNA - SDS sodium dodecylsulphate