... The MegaBACE 1000 capillary sequencer was purchased from Amersham Biosciences, as were the ECL-Plus chemiluminescence ... min, and finally 30 min at 68°C. Cycle sequencing (20-μL final reaction volume) was performed ... C for 20 sec, 54°C for 20 sec, and 60° C for 1 min. ...