rna from unfractionated cells , nuclei , and polyribosomes was extracted from adenovirus 2 ( ad2 ) -infected kb cells early in infection and annealed in vast excess in liquid to purified ad2 l ( heavy ) and r ( light ) [ ( 32 ) p ] dna strands ( specific activity , 3 x 10 ( 6 ) to 1.5 x 10 ( 7 ) cpm/mug ) .
C0007634
cells
C0007610
nuclei