Year: 1952
Type: article
Abstract: A. RICH1 at low temperature may mean that the DNA particles are enabled to sus- tain one ionization within their structures, but no more.Increasing the ion density by a factor of two could then give the observed increase in cross-section.Another possible extension of the work would be the bom- bardment of active DNA before the separation from protein.Summary.-Pneumococcus transforming principle DNA has been bombarded with 2-m.e. v. electrons and 3.8-m.e. v. deuterons with indica- tion by assay of activity remaining of a molecular weight of about 6,000,000.Acknowledgments.-We were assisted in the cyclotron work by Mr John Preiss.We are indebted to Dr. A. 0. Allen and to Dr. J. Saltick of Brookhaven for the use of the Van de Graaff machine and for assistance in those runs, and to Mr. Marvin Slater for the run with the linear accelerator.
Author: Alexander Rich
Institution: California Institute of Technology
Language: English
Subfield: Genetics
Field: Medicine
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W2012694896