Rill, R L Heterogeneity of chromatin fragments produced by micrococcal nuclease action. [electronic resource] - Nucleic acids research Sep 1975 - 1525-38 p. digital Publication Type: Journal Article ISSN: 0305-1048 Standard No.: 10.1093/nar/2.9.1525 doi Subjects--Topical Terms: AnimalsCattleCell FractionationCell Nucleus--analysisCentrifugation, Density GradientChromatin--analysisDNA--analysisMicrococcal NucleaseThymus Gland--analysis