title: Asynchronous Synthesis of RNA in Nucleoli of Root Meristem.
abstract: During pulse incubations of onion roots with RNA precursors, incorporation into meristematic nucleoli is asynchronous for some, but not for all, cells. After a 30-minute labeling period, the "zero-class" is as large as 25 percent, and the asynchrony is intracellular rather than cellular. This suggests an individual specificity of nucleolar function in a population of differentiating cells.
authors.forename: A K
authors.initials: AK
authors.lastname: Bal
authors.forename: P R
authors.initials: PR
authors.lastname: Gross