Research Highlights 



Physical Mapping 



Automated robotic system used to 

 prepare DNA cosmid clones, (a) The 



investigator is using a robot to prepare 

 sample solutions that contain cloned DNA 

 fragments for loading onto gels for 

 electrophoresis. Electrophoresis is used to 

 determine the size of cloned DNA fragments 

 prior to employing the fragments in 

 hybridization techniques, (b) Close-up view 

 of the eight-channel pipette arm that 

 prepares and loads samples onto gels. 

 {Photographs provided by Glen Evans, 

 The Salk Institute.) 



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