analysis of the cytoplasmic fraction of chick embryo cells during the exponential phase of western equine encephalomyelitis ( wee ) virus growth showed that the viral ribonucleic acid ( rna ) labeled by a short pulse with ( 3 ) h-uridine was associated with a structure which sedimented in sucrose density gradients with a coefficient of 65s .
C0010834
cytoplasmic
C0007634
cells