cycle vs. normal sequencing

[GR Taylor]

We wanted to do sequencing for diagnostic testing on small 
(200-350base) frags. We looked at a range of kits and got really 
brilliant results using USB's delta taq sequencing kit on 
biotinylated cleaned up PCR prods. However since the Amersham 
merger with USB it has been hard to get hold of that kit and 
we've been using the Cycle kit from Epicentre with almost as good 
results (slightly higher background making it more difficult to 
call heterozygotes). Cycling kits require more hands on time than 
T7 kits, but work better on ds tmplates, or lower concentration 
templates. Sequenase is the easiest and best if you have plenty 
of template, single stranded and hig purity.