Abstract
DNA synthesis was studied in human peripheral blood lymphocytes that had been stimulated with phytohemagglutinin. DNA pulse-labeled with [3H]thymidine was fractionated by sucrose gradient centrifugation or by chromatography on hydroxylapatite columns. Nascent DBA was identified as a single-stranded species that sedimented at 4-5S in neutral sucrose gradients and appeared to be precursor to chromosomal DNA in pulse-chase experiments. At least two-thirds of the nascent DWA was released as single strands from high molecular weight DWA without employing a denaturation step. It is concluded that synthesis of DNA by phytohemagglutinin-stimulated lymphocytes involves a low molecular weight, single-stranded, short-lived intermediate similar to that described for other eukaryotic cells.
Original language | English (US) |
---|---|
Pages (from-to) | 373-385 |
Number of pages | 13 |
Journal | Immunological Investigations |
Volume | 4 |
Issue number | 4 |
DOIs | |
State | Published - 1975 |
ASJC Scopus subject areas
- Immunology