to compare the rare hnrna sequences synthesized by blastulae and coelomocytes directly , labelled single-copy dna was hybridized with blastula nuclear rna to high rna c0t , fractionated into sequences complementary and non-complementary to blastula nuclear rna by chromotography on hydroxyapatite , and then each fraction was rehybridized with nuclear rna from blastulae and coelomocytes .
C0035668
rna
C0035700
nuclear rna