《英文msh词典》Nuclear RNA,Heterogeneous
[入口词] Nuclear RNA,Heterogeneous
[主题词] RNA,Heterogeneous Nuclear
[英文释义] Nuclear nonribosomal RNA larger than about 1000 nucleotides,the mass of which is rapidly synthesized and degraded within the cell nucleus. Some heterogeneous nuclear RNA may be a precursor to mRNA. However,the great bulk of total hnRNA hybridizes with nuclear DNA rather than with mRNA.