The Differential Staining of Heterochromatin and Euchromatin of the Salivary Gland Chromosome with Neutral Violet

Abstract

By means of the oxidizing activity of supersonic vibration, the euchromatic bands can be made to take purplish blue when stained with neutral violet, while the heterochromatin region remains purplish-red. This shows the difference in chemical composition between euchromatin and heterochromatin.