期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1975
卷号：72
期号：6
页码：2207-2211
DOI：10.1073/pnas.72.6.2207
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：The cleavage of Bacillus subtilis DNA by EcoR1 restriction endonuclease produced segments which retain various degrees of genetic transforming activity. The active segments analyzed thus far, range in size from 23 to 3 kilobases and can be partially separated by agarose gel electrophoresis. Various markers can thus be enriched from 30- to 60-fold.
