we have tested the hypothesis [ wiegers , kramer , klapproth & hilz ( 1976 ) eur . j. biochem . 64 . 535-540 ] that the synthesis of rrna in the nucleolus may have a partially independent supply of nucleoside triphosphates that is not completely suppressed when cells are supplied with exogenous nucleosides .
C0007609
nucleolus
C0007634
cells