Maurer, B J <br/><br/>
Novel submicroscopic extrachromosomal elements containing amplified genes in human cells.  [electronic resource] 

 -  Nature   
 - 434-7 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S. 
<br/><br/><label>ISSN: </label>0028-0836 
<br/><br/><label>Standard No.: </label>10.1038/327434a0  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drug Resistance<br/>Extrachromosomal Inheritance<br/>Gene Amplification<br/>Genes<br/>Genetic Variation<br/>HeLa Cells--enzymology<br/>Humans<br/>Methotrexate--pharmacology<br/>Tetrahydrofolate Dehydrogenase--genetics