Analysis of a nucleic acid samples having thousands of bases is conducted by capillary electrophoresis. The electrophoretic section is provided with a first capillary filled with an agarose gel and a second capillary filled with a polyacrylamide gel. An on-column detector is incorporated with the second...http://www.google.de/patents/US5458761?utm_source=gb-gplus-sharePatent US5458761 - Method for analyzing nucleic acid or protein and apparatus therefor
